Capital Stock - Additional Information (Detail) - USD ($)		12 Months Ended
	Feb. 11, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 20, 2019
Class of Stock [Line Items]
All classes of stock, shares authorized (in shares)		1,020,000,000.00
Shares of all classes of stock, par value (in usd per share)		$ 0.01
Common stock, shares authorized (in shares)		1,000,000,000.0	1,000,000,000
Preferred stock, shares authorized (in shares)		10,000,000	10,000,000
Shares issued during the period for stock-based compensation plans (in shares)		1,600,000
Series Common Stock
Class of Stock [Line Items]
Common stock, shares authorized (in shares)		10,000,000.0
Treasury Stock
Class of Stock [Line Items]
Treasury stock, shares, acquired (in shares)		5,200,000	1,200,000	1,600,000
Accelerated Share Repurchase Initial Date
Class of Stock [Line Items]
Accelerated share repurchases payment					$ (500,000,000)
Subsequent Event
Class of Stock [Line Items]
Dividend declared, declaration date	Feb. 11, 2020
Quarterly dividend declared (in dollars per share)	$ 0.56
Dividend declared, payable date	Mar. 18, 2020
Dividend declared, record date	Feb. 25, 2020