Equity-Based Compensation - Assumptions (Detail) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) item $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred income tax benefits included in income tax expense	$ 18	$ 27	$ 25
Employee Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense recognized	94	79	75
Deferred income tax benefits included in income tax expense	18	$ 15	$ 17
Currently unrecognized compensation expense	$ 49
Weighted average period unrecognized compensation expenses expected to be recognized	1 year 6 months
Non-Employee Director Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments | item	2
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of stock options granted | $ / shares	$ 17.25	$ 15.82	$ 12.22
Expected option life	4 years 8 months 12 days	4 years 7 months 6 days	4 years 2 months 12 days
Expected volatility	23.20%	16.60%	15.50%
Expected dividend yield	2.10%	1.70%	2.10%
Risk-free interest rate	0.60%	1.40%	2.50%