Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended
	Jul. 29, 2020	Jul. 28, 2020	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Subsequent Event [Line Items]
Restructuring charges			$ (2)	$ 53		$ (3)	$ 59
Subsequent Event
Subsequent Event [Line Items]
Dividend declared, declaration date		Jul. 28, 2020
Dividend declared, per share (in USD per share)		$ 0.56
Dividend declared, payable date		Sep. 10, 2020
Dividend declared, record date		Aug. 20, 2020
Minimum | Subsequent Event
Subsequent Event [Line Items]
Restructuring expected cost	$ 25
Minimum | Forecast | Subsequent Event
Subsequent Event [Line Items]
Restructuring charges					$ 20
Maximum | Subsequent Event
Subsequent Event [Line Items]
Restructuring expected cost	35
Maximum | Forecast | Subsequent Event
Subsequent Event [Line Items]
Restructuring charges					$ 30
Exit of Certain Real Estate Leases | Minimum | Forecast | Subsequent Event
Subsequent Event [Line Items]
Annualized savings	5
Exit of Certain Real Estate Leases | Maximum | Forecast | Subsequent Event
Subsequent Event [Line Items]
Annualized savings	$ 6