Annual report pursuant to Section 13 and 15(d)

Leases - Income Statement Location Table (Details)

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Leases - Income Statement Location Table (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Finance lease cost:      
Total lease cost $ 625    
Short-term lease cost 230    
Variable lease cost 7    
Operating leases, rent expense   $ 335 $ 199
Operating costs and expenses [Member]      
Lessee, Lease, Description [Line Items]      
Operating lease cost [1],[2] 612    
Depreciation and amortization expense [Member]      
Finance lease cost:      
Amortization of right-of-use assets 3    
Interest expense, net of capitalized interest [Member]      
Finance lease cost:      
Interest on lease liabilities $ 10    
[1]
Includes $230 million of short-term lease costs and $7 million of variable lease costs paid to the lessor.
[2]
Presented in cost of sales, operating and maintenance expense or selling, general and administrative expense consistent with the nature of the asset under lease.