Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Revenue recognition - Balance sheet (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Revenue recognition - Balance sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Assets      
Other current assets $ 360 $ 411 $ 356
Other assets 583 636 599
Liabilities and Equity      
Accounts Payable and accrued liabilities 1,116 1,283 1,250
Deferred revenue 2,079 1,899 1,941
Other current liabilities 32 31 20
Other liabilities 864 809 779
Deferred income tax liabilities 1,651 1,493 1,478
Retained earnings 13,644 13,122 13,081
Noncontrolling interests in equity of subsidiaries $ 5,103 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