Geographic and Business Segment Information - Revenues and Property and Equipment, Net for Each of Geographical Areas (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		$ 1,362	$ 852	$ 2,844
Property and equipment, net		8,511	9,193	9,594
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	[1]	1,362	849	2,804
Property and equipment, net	[1]	8,511	9,193	9,594	[2]
All Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues		0	$ 3	$ 40
Property and equipment, net		$ 0

[1] Includes revenues of $2 million and $11 million for the years ended December 31, 2020 and 2019 from our laundry operations, which was not part of our segment and was permanently closed as of December 31, 2020. Also includes property and equipment, net of $2 million, $2 million and $5 million as of December 31, 2021, 2020 and 2019, respectively, from our laundry operations.

[2] Excludes $62 million of property and equipment, net classified as held for sale as of December 31, 2019.