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Revenue from Contracts with Customers - Summary of Disaggregation of Revenues by Major Revenue Streams (Detail) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disaggregation of Revenue [Line Items]                      
Total revenue $ 4,559 $ 4,529 $ 4,701 $ 5,065 $ 5,398 $ 5,617 $ 5,720 $ 5,650 $ 18,854 $ 22,385 $ 21,903
Sale of Goods [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 15,881 19,256 19,989
Licensing Arrangements [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 165 327 314
Distribution [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 1,956 1,916 963
Other [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 852 886 637
International Markets [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 3,005 3,395 4,015
International Markets [Member] | Sale of Goods [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 2,151 2,558 3,286
International Markets [Member] | Licensing Arrangements [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 22 38 8
International Markets [Member] | Distribution [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 602 549 458
International Markets [Member] | Other [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 230 250 263
Other Activities [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 1,366 1,383 1,141
Other Activities [Member] | Sale of Goods [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 739 748 766
Other Activities [Member] | Licensing Arrangements [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 9 5 8
Other Activities [Member] | Other [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 618 630 367
North America [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 9,297 12,141 11,778
North America [Member] | Sale of Goods [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 7,838 10,706 11,186
North America [Member] | Licensing Arrangements [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 111 281 291
North America [Member] | Distribution [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 1,347 1,153 301
North America [Member] | Other [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 1 1  
Europe [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 5,186 5,466 4,969
Europe [Member] | Sale of Goods [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 5,153 5,244 4,751
Europe [Member] | Licensing Arrangements [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 23 3 7
Europe [Member] | Distribution [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 7 214 204
Europe [Member] | Other [Member]                      
Disaggregation of Revenue [Line Items]                      
Total revenue                 $ 3 $ 5 $ 7