XML 42 R75.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Leases - Supplemental Cash Flows (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Operating cash flows from operating leases $ 665
Operating cash flows from finance leases 14
Financing cash flows from finance leases 32
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities 358
Right-of-use assets obtained in exchange for new finance lease liabilities $ 14