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Segments - Summary of Segment Profit (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues $ 3,870 $ 4,177 $ 8,227 $ 8,326
Gross profit 1,763 1,893 3,826 3,749
R&D expenses 225 276 446 537
S&M expenses 597 666 1,210 1,313
G&A expenses 264 296 567 589
Segment profit 173 (644) 364 (510)
North America [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 2,047 2,071 4,129 4,118
Gross profit 1,090 1,067 2,152 2,107
R&D expenses 154 175 300 340
S&M expenses 254 269 505 537
G&A expenses 110 117 228 230
Other (income) expenses (2) 2 (4) (2)
Segment profit 573 504 1,123 1,001
Europe [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 1,001 1,183 2,404 2,448
Gross profit 548 674 1,371 1,404
R&D expenses 65 70 120 136
S&M expenses 188 216 390 431
G&A expenses 52 70 118 119
Other (income) expenses (1) 1 (2) (1)
Segment profit 244 316 746 719
International Markets [Member]        
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]        
Revenues 488 582 1,053 1,103
Gross profit 247 312 552 582
R&D expenses 19 24 34 46
S&M expenses 105 119 211 234
G&A expenses 29 34 63 70
Other (income) expenses (2) (1) (8) (1)
Segment profit $ 97 $ 136 $ 253 $ 233