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Revenues - Summary of Consolidated Net Revenues Disaggregated by Product Group, Geographical Region of Shipment and Nature (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue [Line Items]    
Total revenues $ 9,664 $ 8,347
Total revenues 9,664 8,347
Total revenues 9,664 8,347
Sales Channel, Directly to Consumer [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 6,325 5,549
Total revenues 6,325 5,549
Total revenues 6,325 5,549
Sales Channel, Through Intermediary [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 3,339 2,798
Total revenues 3,339 2,798
Total revenues 3,339 2,798
Net Sales [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 9,461 8,175
Total revenues 9,461 8,175
Total revenues 9,461 8,175
Service [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 151 133
Total revenues 151 133
Total revenues 151 133
Other Revenues [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 52 39
Total revenues 52 39
Total revenues 52 39
EMEA [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 2,478 2,142
Total revenues 2,478 2,142
Total revenues 2,478 2,142
Americas [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 1,264 1,085
Total revenues 1,264 1,085
Total revenues 1,264 1,085
Asia Pacific [Member]    
Disaggregation of Revenue [Line Items]    
Total revenues 5,922 5,120
Total revenues 5,922 5,120
Total revenues $ 5,922 $ 5,120