Segments - Summary of Segment Profit (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 3,982	$ 4,357
Gross profit	1,878	2,063
R&D expenses	254	221
S&M expenses	585	613
G&A expenses	290	304
Segment profit	434	191
North America [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,989	2,082
Gross profit	1,074	1,062
R&D expenses	160	146
S&M expenses	229	251
G&A expenses	111	118
Other (income) expense	(3)	(2)
Segment profit	577	550
Europe [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,214	1,402
Gross profit	688	823
R&D expenses	66	55
S&M expenses	214	202
G&A expenses	70	66
Other (income) expense		(1)
Segment profit	338	502
International Markets [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	490	565
Gross profit	260	305
R&D expenses	18	15
S&M expenses	96	106
G&A expenses	26	34
Other (income) expense	(2)	(6)
Segment profit	$ 122	$ 156