Quarterly report pursuant to Section 13 or 15(d)

Leases - Income Statement Location Table (Details)

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Leases - Income Statement Location Table (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Finance lease cost:        
Total lease cost $ 102 $ 144 $ 246 $ 284
Short-term lease cost 16 46 51 93
Variable lease cost 4 8 9 13
Operating costs and expenses [Member]        
Lessee, Lease, Description [Line Items]        
Operating lease cost [1],[2] 98 140 239 277
Depreciation and amortization expense [Member]        
Finance lease cost:        
Amortization of right-of-use assets 1 1 2 2
Interest expense, net of capitalized interest [Member]        
Finance lease cost:        
Interest on lease liabilities $ 3 $ 3 $ 5 $ 5
[1]
Includes short-term lease costs of $16 million and $46 million during the three months ended June 30, 2020 and 2019, respectively, and $51 million and $93 million during the six months ended June 30, 2020 and 2019, respectively. Also includes variable lease costs paid to the lessor of $4 million and $8 million during the three months ended June 30, 2020 and 2019, respectively, and $9 million and $13 million during the six months ended June 30, 2020 and 2019, respectively.
[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.