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Stockholders' Deficit - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) | 3 Months Ended
--- | ---
Jun. 30, 2025 | Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | $ (1,694,000,000) | $ (1,599,000,000)
Other comprehensive income (loss) | 34,000,000 | (32,000,000)
Ending balance | (1,588,000,000) | (1,381,000,000)
Other comprehensive income (loss), cash flows hedge, gain (loss) reclassification, before tax | 0 | 0
Derivatives designated for hedge accounting | Net Investment Hedging | Currency swap |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Other comprehensive income (loss), net investment hedge, gain (loss) | (233,000,000) | 7,000,000
Derivatives designated for hedge accounting | Cash Flow Hedges | Currency swap |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Other comprehensive income (loss), cash flows hedge, gain (loss) reclassification, before tax | 5,000,000 | 0
Derivatives designated for hedge accounting | Cash Flow Hedges | Interest rate swap locks, Foreign currency forwards and Other |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Other comprehensive income (loss), cash flows hedge, gain (loss) reclassification, before tax | 14,000,000 | 0
Total Accumulated Other Comprehensive Loss |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (932,000,000) | (881,000,000)
Other comprehensive income (loss) | 34,000,000 |
Ending balance | (898,000,000) | (913,000,000)
Foreign Currency Translation Adjustments, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (989,000,000) | (856,000,000)
Other comprehensive income (loss) | 193,000,000 | (36,000,000)
Ending balance | (796,000,000) | (892,000,000)
Unrealized Gains (Losses) on Net Investment Hedges, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | 47,000,000 | (12,000,000)
Other comprehensive income (loss) | (172,000,000) | 5,000,000
Ending balance | (125,000,000) | (7,000,000)
Unrealized Gains (Losses) on Net Investment Hedges, Net of Tax | Net Investment Hedging |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Other comprehensive income (loss) before reclassification, tax | (61,000,000) | 2,000,000
Unrealized Gains (Losses) on Cash Flow and Other Hedges, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (4,000,000) | 3,000,000
Other comprehensive income (loss) | 14,000,000 | 0
Ending balance | 10,000,000 | 3,000,000
Unrealized Gains (Losses) on Cash Flow and Other Hedges, Net of Tax | Cash Flow Hedges |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Other comprehensive income (loss) before reclassification, tax | 5,000,000 |
Unrealized Gains (Losses) and Other Components of Benefit Plans, Net of Tax |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | 14,000,000 | (16,000,000)
Other comprehensive income (loss) | (1,000,000) | (1,000,000)
Ending balance | $ 13,000,000 | $ (17,000,000)

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