Quarterly report pursuant to Section 13 or 15(d)

Leases - Income Statement Location Table (Details)

v3.20.2
Leases - Income Statement Location Table (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Finance lease cost:        
Total lease cost $ 79 $ 166 $ 325 $ 450
Operating costs and expenses [Member]        
Lessee, Lease, Description [Line Items]        
Operating lease cost [1] 77 163 316 440
Finance lease cost:        
Short-term lease costs 9 57 60 150
Variable lease costs paid to the lessor 3 8 12 21
Depreciation and amortization expense [Member]        
Finance lease cost:        
Amortization of right-of-use assets 0 1 2 3
Interest expense, net of capitalized interest [Member]        
Finance lease cost:        
Interest on lease liabilities $ 2 $ 2 $ 7 $ 7
[1] Presented in cost of sales, operating and maintenance expense or selling, general and administrative expense consistent with the nature of the asset under lease.