Annual report pursuant to Section 13 and 15(d)

Leases - Impact of Adoption of ASC 842 (Details)

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Leases - Impact of Adoption of ASC 842 (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Lease, Practical Expedients, Package [true false] true    
Lease, Practical Expedient, Lessor Single Lease Component [true false] true    
Other current assets $ 33 $ 45 $ 48
Property and equipment, net 155 162 154
Other assets, at cost, net of accumulated amortization 230 191 118
Accrued liabilities and other current liabilities 205 172 151
Deferred income tax liabilities 254 326 325
Other liabilities 381 336 283
Retained earnings 111 134 133
Noncontrolling interests in equity of subsidiaries $ 2,981 3,402 $ 3,400
ASU 2016-02 | Restatement Adjustment      
New Accounting Pronouncements or Change in Accounting Principle [Line Items]      
Other current assets   (3)  
Property and equipment, net   8  
Other assets, at cost, net of accumulated amortization   73  
Accrued liabilities and other current liabilities   21  
Deferred income tax liabilities   1  
Other liabilities   53  
Retained earnings   1  
Noncontrolling interests in equity of subsidiaries   $ 2