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Intangible Assets - Schedule of Intangible Assets by Major Class (Detail) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]    
Gross Book Value $ 9,676 $ 12,465
Accumulated Amortization 2,587 3,738
Net Book Value 7,089 8,727
Customer Relationships    
Finite Lived Intangible Assets [Line Items]    
Gross Book Value 3,779 4,768
Accumulated Amortization 868 1,243
Net Book Value 2,911 3,525
Technology/Technical Know-How    
Finite Lived Intangible Assets [Line Items]    
Gross Book Value 2,498 3,494
Accumulated Amortization 779 1,246
Net Book Value 1,719 2,248
Tradenames    
Finite Lived Intangible Assets [Line Items]    
Gross Book Value 1,885 2,799
Accumulated Amortization 264 628
Net Book Value 1,621 2,171
Other    
Finite Lived Intangible Assets [Line Items]    
Gross Book Value 1,514 1,404
Accumulated Amortization 676 621
Net Book Value $ 838 $ 783