Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2024	Mar. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 2,548,047	$ 474,743
Interest rate cap contracts	16,559	44,497
Total assets measured at fair value on a recurring basis	2,564,606	519,240
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	2,548,047	474,743
Total assets measured at fair value on a recurring basis	2,548,047	474,743
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate cap contracts	16,559	44,497
Total assets measured at fair value on a recurring basis	$ 16,559	$ 44,497