Revenue from Contracts with Customers - Summary of Disaggregation of Revenues by Major Revenue Streams (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 3,887	$ 3,978	$ 11,778	$ 12,206
Sale of Goods [Member]
Disaggregation of Revenue [Line Items]
Total revenue	3,340	3,427	10,268	10,408
Licensing Arrangements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	38	27	106	90
Distribution [Member]
Disaggregation of Revenue [Line Items]
Total revenue	378	350	1,018	1,165
Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	130	174	387	543
International Markets [Member]
Disaggregation of Revenue [Line Items]
Total revenue	530	529	1,505	1,582
International Markets [Member] | Sale of Goods [Member]
Disaggregation of Revenue [Line Items]
Total revenue	495	478	1,397	1,417
International Markets [Member] | Licensing Arrangements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	4	2	9	6
International Markets [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Total revenue	15	9	49	21
International Markets [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	15	41	50	138
Other activities [Member]
Disaggregation of Revenue [Line Items]
Total revenue	262	316	849	957
Other activities [Member] | Sale of Goods [Member]
Disaggregation of Revenue [Line Items]
Total revenue	160	173	534	561
Other activities [Member] | Licensing Arrangements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	1	1	3	3
Other activities [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Total revenue	0	0	0	0
Other activities [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	102	142	312	394
North America [Member]
Disaggregation of Revenue [Line Items]
Total revenue	1,875	2,017	5,807	6,146
North America [Member] | Sale of Goods [Member]
Disaggregation of Revenue [Line Items]
Total revenue	1,487	1,660	4,776	4,943
North America [Member] | Licensing Arrangements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	22	17	62	59
North America [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Total revenue	363	341	968	1,141
North America [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	2	(1)		3
Europe [Member]
Disaggregation of Revenue [Line Items]
Total revenue	1,220	1,116	3,618	3,520
Europe [Member] | Sale of Goods [Member]
Disaggregation of Revenue [Line Items]
Total revenue	1,197	1,116	3,560	3,487
Europe [Member] | Licensing Arrangements [Member]
Disaggregation of Revenue [Line Items]
Total revenue	11	7	32	22
Europe [Member] | Distribution [Member]
Disaggregation of Revenue [Line Items]
Total revenue				3
Europe [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenue	$ 11	$ (8)	$ 25	$ 9