Geographic and Business Segment Information - Revenues and Property and Equipment, Net for Each of Geographical Areas (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues From External Customers And Long Lived Assets [Line Items]
Property and equipment, net classified as held for sale		$ 62
Property and Equipment, net	$ 86	240	$ 178
United States [Member] | Laundry Operations [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Revenues	2	11	14
Property and Equipment, net	$ 2	$ 5	$ 5