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Leases - Schedule Of Lease Expense For Finance And Operating Leases (Detail)
$ in Millions
 3 Months Ended
Mar. 31, 2019
USD ($)
Finance lease expense:  
Amortization of leased assets $ 17
Interest of lease liabilities 6
Operating leases 94 [1]
Short-term lease expense 78 [1]
Variable lease expense 39 [1]
Total lease expense $ 234
[1] Expenses are included in “other operating expenses” in our condensed consolidated income statement.