Intangibles, Net - Summary of Impairment of Long-lived Assets (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Impairment of Long-Lived Assets (Other than Goodwill) [Line Items]
Intangibles, net	$ (84)		$ 0
Property, plant and equipment, net	(4)
Operating right-of-use assets	(2)
Total impairment	(90)
United States [Member]
Impairment of Long-Lived Assets (Other than Goodwill) [Line Items]
Intangibles, net	(62)	$ (34)
Operating right-of-use assets	(1)
Total impairment	(63)
International [Member]
Impairment of Long-Lived Assets (Other than Goodwill) [Line Items]
Intangibles, net	(22)	$ (4)
Property, plant and equipment, net	(4)
Operating right-of-use assets	(1)
Total impairment	$ (27)