Fair value of financial instruments - Assets and Temporary Equity Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring $ in Thousands	Mar. 31, 2026 USD ($)
Assets
Investments in equity securities	$ 37,857
Temporary equity
Noncontrolling interests subject to put provisions	1,524,505
Interest rate cap agreements
Assets
Interest rate cap agreements	21,305
Quoted prices in active markets for identical assets (Level 1)
Assets
Investments in equity securities	37,857
Significant other observable inputs (Level 2) \| Interest rate cap agreements
Assets
Interest rate cap agreements	21,305
Significant unobservable inputs (Level 3)
Temporary equity
Noncontrolling interests subject to put provisions	$ 1,524,505

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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