Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Cumulative Effect of Adoption of ASUs on the Consolidated Balance Sheet (Details)

v3.20.4
Summary of Significant Accounting Policies - Cumulative Effect of Adoption of ASUs on the Consolidated Balance Sheet (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
ASSETS        
Operating lease right-of-use assets $ 427 $ 466 $ 347 $ 0
Liabilities:        
Accounts payable and accrued expenses 1,223 1,151 735 736
Operating lease current liabilities 48 46 30 0
Operating lease liabilities 419 456 339 0
Other long-term liabilities $ 149 $ 94 81 $ 102
Accounting Standards Update 2016-02        
ASSETS        
Operating lease right-of-use assets     347  
Liabilities:        
Accounts payable and accrued expenses     (1)  
Operating lease current liabilities     30  
Operating lease liabilities     339  
Other long-term liabilities     $ (21)