Segments - Summary of Profit by Segments and Reconciliation of Segments Profit to Consolidated Income Before Income Taxes (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Amounts allocated to segments:
Segments profit	$ 434	$ 191
Amounts not allocated to segments:
Amortization	242	258
Other assets impairments, restructuring and other items	137	121
Intangible asset impairments	79	649
Legal settlements and loss contingencies	104	(25)
Other unallocated amounts	82	49
Consolidated operating income (loss)	434	191
Financial expenses, net	290	224
Income (loss) before income taxes	144	(33)
North America [Member]
Amounts allocated to segments:
Segments profit	577	550
Amounts not allocated to segments:
Consolidated operating income (loss)	577	550
Europe [Member]
Amounts allocated to segments:
Segments profit	338	502
Amounts not allocated to segments:
Consolidated operating income (loss)	338	502
International Markets [Member]
Amounts allocated to segments:
Segments profit	122	156
Amounts not allocated to segments:
Consolidated operating income (loss)	122	156
Corporate Segment [Member]
Amounts allocated to segments:
Segments profit	1,036	1,208
Amounts not allocated to segments:
Consolidated operating income (loss)	1,036	1,208
Other Segments [Member]
Amounts allocated to segments:
Segments profit	41	36
Amounts not allocated to segments:
Consolidated operating income (loss)	41	36
Segments and Other Activities [Member]
Amounts allocated to segments:
Segments profit	1,077	1,244
Amounts not allocated to segments:
Consolidated operating income (loss)	$ 1,077	$ 1,244