Quarterly report pursuant to Section 13 or 15(d)

Recent Accounting Pronouncements - Revenue recognition - Balance sheet (Details)

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Recent Accounting Pronouncements - Revenue recognition - Balance sheet (Details) - USD ($)
$ in Millions
Mar. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Assets      
Trade and other receivables, net $ 394   $ 358
Other current assets 483 $ 431 376
Other assets 715 677 640
Liabilities and Equity      
Accounts Payable and accrued liabilities 1,064 1,283 1,250
Deferred revenue 2,463 1,899 1,941
Other current liabilities 24 31 20
Other liabilities 891 809 779
Deferred income tax liabilities 1,510 1,493 1,478
Retained earnings 13,247 13,122 13,081
Noncontrolling interests in equity of subsidiaries $ 5,498 5,635 $ 5,631
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606      
Assets      
Other current assets   55  
Other assets   37  
Liabilities and Equity      
Accounts Payable and accrued liabilities   33  
Deferred revenue   (42)  
Other current liabilities   11  
Other liabilities   30  
Deferred income tax liabilities   15  
Retained earnings   41  
Noncontrolling interests in equity of subsidiaries   $ 4