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Segments - Summary of Segment Profit (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues $ 3,887 $ 3,978 $ 11,778 $ 12,206
Gross profit 1,794 1,852 5,544 5,678
R&D expenses 222 258 723 704
S&M expenses 597 605 1,798 1,815
G&A expenses 291 279 822 846
Segment profit 623 (4,342) 1,638 (3,978)
North America [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 1,875 2,017 5,807 6,146
Gross profit 967 1,056 3,081 3,208
R&D expenses 146 155 467 455
S&M expenses 250 250 734 755
G&A expenses 121 97 338 325
Other income (7) (5) (14) (9)
Segment profit 458 560 1,556 1,682
Europe [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 1,220 1,116 3,618 3,520
Gross profit 714 637 2,063 2,009
R&D expenses 55 60 184 180
S&M expenses 204 200 628 590
G&A expenses 64 66 180 184
Other income (2) (1) (3) (3)
Segment profit 394 312 1,074 1,058
International Markets [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 530 529 1,505 1,582
Gross profit 296 275 826 828
R&D expenses 16 17 51 51
S&M expenses 102 101 303 312
G&A expenses 29 33 79 96
Other income (2) (1) (5) (10)
Segment profit $ 152 $ 125 $ 398 $ 378