Leases - Additional Information (Detail) $ in Millions	1 Months Ended
	Apr. 30, 2021 USD ($) ft² RenewalOption	Jun. 30, 2020 USD ($)	Jul. 30, 2021 USD ($)
Leases [Line Items]
Future undiscounted payments			$ 295
Build-to-suit Office Building
Leases [Line Items]
Operating remaining lease term		20 years
Future undiscounted payments		$ 67
Operating lease, existence of option to extend		true
Corporate Headquarters Leases
Leases [Line Items]
Operating remaining lease term	11 years
Future undiscounted payments	$ 180
Operating lease, existence of option to extend	true
Number of renewal option | RenewalOption	2
Operating Lease, renewal term	5 years
Office space | ft²	300,000
Maximum | Real Estate
Leases [Line Items]
Operating remaining lease term			15 years
Maximum | Equipment
Leases [Line Items]
Operating remaining lease term			4 years
Maximum | Automobiles
Leases [Line Items]
Operating remaining lease term			5 years