Rod Smith
Executive Vice President, Chief Financial Officer and Treasurer at American Tower
Thanks, Steve. Good morning, and thank you for joining today's call. As highlighted in this morning's press release, we had a strong second quarter, driven by the resilient demand for our assets and resulting in robust performance across several key areas.
Given the critical nature of our global portfolio and the growth trends in mobile data consumption, we head into the back half of the year confident in our ability to drive strong growth, execute on our cost management initiatives, enhance our quality of earnings, and deliver compelling total shareholder returns. Before I discuss the specifics of our Q2 results and revised full year outlook, I'll summarize a few of the highlights.
First, activity levels on our tower assets remain strong. Our consolidated organic tenant billings growth of 5.3% continues to demonstrate the strength of the fundamentals [Phonetic] that fuel our business. And our U.S. services Segment performed in line with our expectations for accelerating tower activity in 2024, with revenues and gross profit each increasing over 50% versus Q1, and more than double that of Q4 of 2023. Next, CoreSite executed another exceptionally strong quarter, with double-digit revenue growth, their second-highest quarter of signed new leasing in the company's history and record cash backlog.
Additionally, our data center projects currently under development are roughly 60% pre-leased, four times the historical average, providing confidence and visibility to an accelerated pathway to realizing CoreSite's best-in-class returns on invested capital. Furthermore, in India, the positive collection trends we saw over the last several quarters continued in Q2, allowing us to reverse approximately $67 million of previously reserved revenue and clearing the majority of the outstanding AR we have with a key customer. Separately, we made further progress in accelerating certain payments included in the approximately $2.5 billion of potential total proceeds associated with our pending sale of ATC India. In the quarter, we repatriated more than $210 million back to the U.S., and we are in the process of repatriating an additional approximately $20 million, largely associated with the monetization of the VIL OCD's net of fees. To date, total accelerated proceeds stand at approximately $345 million, inclusive of funds received in Q1, and we expect the remaining proceeds, potentially of approximately $2.1 billion, to be received at closing. As we make progress towards closing, which we continue to target the second half of 2024, we anticipate incurring incremental costs within the business between SG&A and maintenance capex, a modest offset to the upside realized through strong collections. I will touch on these items and how they impact our outlook later.
Finally, we continue to effectively execute on our balance sheet initiatives, highlighted in the quarter by the issuance of 1 billion Euro-denominated senior unsecured notes [Phonetic] at a weighted average cost of 4%. The proceeds were used to pay down floating rate debt, lowering our ratio back to 89% fixed to 11% floating.
Turning to second quarter property revenue and organic tenant billings growth on Slide 8, consolidated property revenue growth was 4.6%, or over 6.5% excluding non-cash straight line revenue, while absorbing roughly 230 basis points of FX headwinds. U.S. and Canada property revenue growth was approximately 1%, or over 4% excluding straight line and includes an approximately 1% negative impact from sprint [Phonetic] churn. International revenue growth was approximately 7%, or over 12% excluding the impacts of currency fluctuations, which includes an over 8% benefit associated with improved collections in India.
Finally, data center revenues increased over 12% as demand for hybrid and multi-cloud IT architecture continues unabated, AI-driven demand picks up and the backlog of record new business signed over the last two years continues to commence. Moving to the right side of the Slide, consolidated organic tenant billings growth was 5.3%, supported by strong demand for our assets across our global portfolio. In our U.S. and Canada Segment, organic tenant billings growth was 5.1%, and over 6% absent sprint-related churn. We expect a similar growth rate in Q3 before a step-down in Q4 as we commence the final Toronto contracted sprint churn, all supportive of our 2024 outlook expectation of approximately 4.7%. Our International segment drove 5.5% in organic tenant billings growth, reflecting additional moderation in CPI-linked escalators as expected, and a sequential step-down in co-location and amendment contributions, most notably in APAC.
However, in Europe, we saw another quarter of accelerating new business, moving organic tenant billings growth in the region to 5.7%, and giving us confidence to modestly raise our full-year outlook for the segment, which I'll touch on shortly.
Turning to Slide 9, adjusted EBITDA grew 8.1%, or nearly 12%, excluding the impacts of non-cash straight line, while absorbing approximately 210 basis points in FX headwinds. Cash adjusted EBITDA margins improved approximately 300 basis points year-over-year to 64.7%, which includes a roughly 80 basis point benefit in the quarter associated with the India reserve reversals, as compared to a drag of nearly 50 basis points in the year-ago period. Absent these one-time items, we're continuing to demonstrate meaningful cash margin improvements, supported by the inherent operating leverage in the tower model and continued cost management throughout the business. In fact, cash SG&A, excluding bad debt, declined approximately 2.5% year-over-year in the quarter.
Moving to the right side of the Slide, attributable AFFO and attributable AFFO per share grew by 13.5% and 13.4%, respectively, supported by a high conversion of cash adjusted EBITDA growth to attributable AFFO. Now, shifting to our revised full-year outlook, I'll start with a few key updates. First, as I mentioned earlier, we've had a strong start to the year. Core performance remains solid, and our continued focus on driving cost discipline and margin expansion across the business is paying off through exceptional conversion rates of top-line results through adjusted EBITDA and AFFO.
As you'll see in the next several slides, our core results to date and expectations for the remainder of the year are contributing to outperformance across key metrics for 2024, as compared to our prior expectations. Next, having now come off several consecutive quarters of solid collections in India, we've reassessed expectations for the year. In our prior outlook, we had assumed nearly $50 million in revenue reserves from Q2 to Q4, or just over $16 million per quarter.
As I mentioned earlier, through positive collections in Q2, we've reversed $67 million of previously reserved revenue, translating to an upside of $84 million, as compared to our prior outlook assumption for the quarter. We now have confidence to fully remove our previous reserve assumption for the second half of the year, representing an incremental $32 million in upside, which, together with Q2 results, is driving an outlook-to-outlook increase of around $116 million across property revenue, adjusted EBITDA, and attributable AFFO.
Finally, we have revised our FX assumptions, providing an incremental headwind of $51 million, $33 million, and $28 million to property revenue, adjusted EBITDA, and attributable AFFO, respectively.
Turning to Slide 10, we are increasing our expectations for property revenue by approximately $20 million compared to prior outlooks. Outperformance includes $116 million associated with positive collection trends in India, partially offset by a decrease of $45 million, which consists of a decrease of $58 million in pass-through, primarily due to fuel costs, net of an increase of $13 million in straight-line revenue. Consolidated core property revenue remains unchanged, with certain offsetting movements between segments. Growth was partially also offset by $51 million [Phonetic] associated with negative FX impacts.
Moving to Slide 11, expectations for consolidated, U.S. and Canada, total International, and APAC organic tenant buildings growth remain unchanged. However, we have raised expectations for Africa to greater than 12% and Europe to approximately 6%, up from 11% to 12%, and 5% to 6%, respectively. In addition, we have lowered our expectations for Latin America to greater than 1.5%, down from approximately 2%.
Turning to Slide 12, we are increasing our adjusted EBITDA outlook by $130 million as compared to the prior outlook. Outperformance is driven by the flow-through of FX neutral property revenue upside and direct expense savings, partially offset by additional SG&A costs in India and $33 million of FX headwinds.
Moving to Slide 13, we are raising our expectations for AFFO attributable to common stockholders by $85 million at the midpoint and $0.18 on a per-share basis, moving the midpoint to $10.60. Cash adjusted EBITDA outperformance is partially offset by incremental maintenance capex, split between the U.S. and Canada, where we're prioritizing certain incremental projects, and India. Growth is partially offset by $28 million in FX headwinds. Excluding India, outperformance on an FX neutral basis was $27 million as compared to prior outlook.
Turning to Slide 14, you'll see our capital allocation plans remain relatively consistent, including unchanged expectations for our 2024 dividend distribution, which is subject to board approval. On the capital program side, we are increasing our plan for 2024 by $55 million, which includes $30 million associated with maintenance capex, as I previously mentioned, and additional success-based development investments in our U.S. data center business to maximize sellable capacity on the back of ongoing record demand.
Additionally, we have reallocated certain discretionary capital buckets, including an increase towards our strategically important U.S. land acquisition program, partially offset by savings and redevelopment. Moving to the right side of the slide, we remain focused on strengthening our balance sheet and accelerating our pathway to additional financial flexibility. This commitment is demonstrated through our successful execution in the capital markets, including the issuance of over $2 billion in fixed rate debt since the start of the year. A strategic and disciplined approach towards our capital deployment priorities, highlighted through reductions in discretionary capital spend in each of the last several years, together with a rebalancing of strategic priorities between geographies and risk profiles, and a continued cost focus across the business. These strategic actions have translated into meaningful progress towards achieving our net leverage target and an improved fixed-to-floating rate debt profile over the past 24 months.
Turning to Slide 15, and in summary, we are pleased with our execution through the first half of the year, demonstrating the strength of the fundamentals that underpin our business through solid organic growth and a diligent focus on cost management throughout our Company. Combined with our prudent approach to capital allocation, while reinforcing and enhancing our balance sheet strength and financial flexibility, we believe we are well-positioned to drive strong sustainable growth and long-term shareholder value while being a best-in-class operation for our stakeholders across the globe.
With that, operator, we can open the line for questions.