Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - 10-K - Recent Adopted Accounting Policies (Details)

v3.19.3.a.u2
Summary of Significant Accounting Policies - 10-K - Recent Adopted Accounting Policies (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating lease right-of-use assets $ 466 $ 347
Lease liabilities $ 502  
Accounting Standards Update 2016-02    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Operating lease right-of-use assets   347
Lease liabilities   $ 369