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v3.19.1

Leases - Supplemental balance sheet information (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Operating leases: |  |
Operating lease right of use assets | $ 797 |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Operating lease right of use assets |
Current operating lease liabilities | $ 255 |
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | Current operating lease liabilities |
Noncurrent operating lease liabilities | $ 531 |
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Noncurrent operating lease liabilities |
Total operating lease liabilities | $ 786 |
Finance leases: |  |
Property and equipment, at cost | 25,124 | $ 24,873
Accumulated amortization | (16,295) | (16,135)
Property, Plant and Equipment - net | 8,829 | $ 8,738
Current obligations of finance leases | $ 16 |
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | Current obligations of finance leases |
Finance leases, net of current obligations | $ 84 |
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | Finance leases, net of current obligations |
Total finance lease liabilities | $ 100 |
Weighted average remaining lease term (in years): |  |
Operating leases weighted average remaining lease term (in years) | 4 years 8 months 12 days |
Finance leases weighted average remaining lease term (in years) | 8 years 6 months |
Weighted average discount rate: |  |
Operating leases weighted average discount rate (as a percent) | 3.00% |
Finance leases weighted average discount rate (as a percent) | 4.90% |
Property and equipment finance leases |  |
Finance leases: |  |
Property and equipment, at cost | $ 191 |
Accumulated amortization | (89) |
Property, Plant and Equipment - net | $ 102 |

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