Income Tax Provision (Benefit) Calculated at Statutory U.S. Federal Corporate Income Tax Rate and Actual Income Tax Provision (Benefit) Recorded (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory federal income tax provision (benefit)	$ (21)	$ (202)	$ 202
Adjustment for nontaxable (income) loss of Host Inc.	(40)	34	(182)
Adjustment for net operating loss carryback to 2017-2019	0	18	0
State income tax provision (benefit), net	(23)	(62)	7
Change to uncertain tax provision	(4)	(3)	(3)
Foreign income tax provision (benefit)	(3)	(5)	6
Total	$ (91)	$ (220)	$ 30