Segments - Summary of Segment Profit (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2021		Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	$ 3,910		$ 3,870	$ 7,892	$ 8,227
Gross profit	1,873		1,763	3,750	3,826
R&D expenses	248		225	501	446
S&M expenses	615		597	1,200	1,210
G&A expenses	242		264	532	567
Segment profit	582		173	1,015	364
North America [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,943		2,047	3,932	4,129
Gross profit	1,040		1,090	2,114	2,152
R&D expenses	162		154	322	300
S&M expenses	255		254	483	505
G&A expenses	106		110	218	228
Other (income) expense	(5)		(2)	(7)	(4)
Segment profit	521		573	1,098	1,123
Europe [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	1,184		1,001	2,398	2,404
Gross profit	661		548	1,349	1,371
R&D expenses	63		65	129	120
S&M expenses	209		188	424	390
G&A expenses	47		52	117	118
Other (income) expense		[1]	(1)	(1)	(2)
Segment profit	343		244	680	746
International Markets [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Revenues	485		488	975	1,053
Gross profit	270		247	530	552
R&D expenses	18		19	35	34
S&M expenses	105		105	201	211
G&A expenses	25		29	51	63
Other (income) expense	(1)		(2)	(3)	(8)
Segment profit	$ 123		$ 97	$ 245	$ 253

[1] Represents an amount less than $1 million.