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Other Expense, Net - Other Expense, Net (Parenthetical) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Components of Other Expense (Income), Net [Line Items]    
Restructuring $ 21  
Restructuring charges, after tax 21  
Unrealized gain on investment revaluation 65 $ 31
Impairment of assets 435 727
Asset impairment charges after tax 57  
Net (gains) losses on investment (32) 6
Loss on investments, after tax   5
Proceeds from sale of investments   231
Proceeds on the sale of business   1,230
Gain on the sale of business   524
Gain on the sale of business, after tax   447
Private Equity Investments [Member]    
Components of Other Expense (Income), Net [Line Items]    
Unrealized gain on investment revaluation 34 17
Unrealized gain on investment revaluation, after tax 29 15
Non-cash impairment charge on private equity investment 2  
Non-cash impairment charge on private equity investment, after tax 2  
Lyft [Member] | Private Equity Investments [Member]    
Components of Other Expense (Income), Net [Line Items]    
Net (gains) losses on investment   23
Loss on investments, after tax   $ 20
Number of shares sold of (investment in) Lyft, Inc.   5,400,000
Proceeds from sale of investments   $ 231
Power & Vision [Member]    
Components of Other Expense (Income), Net [Line Items]    
Restructuring  
Power & Vision [Member] | Electronic Operations [Member]    
Components of Other Expense (Income), Net [Line Items]    
Impairment of assets   27
Asset impairment charges after tax   20
Body Exteriors & Structures [Member]    
Components of Other Expense (Income), Net [Line Items]    
Restructuring $ 21 31
Restructuring charges, after tax   $ 31