Fixed Assets - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Depreciation and amortization expense	$ 461	$ 443	$ 432
Weighted average amortization period for software	5 years	5 years
Capitalized software costs not yet placed in service	$ 56
Purchase of equipment, property and improvements, net	234	$ 129	176
Equipment, Property and Improvements [Member]
Property Plant And Equipment [Line Items]
Depreciation and amortization expense	113	116	107
Software [Member]
Property Plant And Equipment [Line Items]
Amortization expense on software	$ 16	$ 9	$ 8