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v3.19.1

Leases (Details) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2019 USD ($) approach | Jan. 31, 2019 USD ($) | Jan. 01, 2019 USD ($) | Dec. 31, 2018 USD ($)
Leases |  |  |  |
Stockholders' equity | $ 9,703 |  |  | $ 9,796
Number of options to renew for operating leases | approach | 1 |  |  |
Number of options to renew for finance leases | approach | 1 |  |  |
Operating leases, existence of option to extend | true |  |  |
Finance leases, existence of option to extend | true |  |  |
Lease liabilities | $ 786 |  |  |
Operating lease right of use assets | $ 797 |  |  |
Lease, Practical Expedients, Package [true false] | true |  |  |
Lease, Practical Expedient, Use of Hindsight [true false] | false |  |  |
Maximum |  |  |  |
Leases |  |  |  |
Operating lease, term | 5 years |  |  |
Finance lease, term | 5 years |  |  |
Adjustment | ASU 2016-02 Leases |  |  |  |
Leases |  |  |  |
Lease liabilities |  |  | $ 800 |
Operating lease right of use assets |  | $ 800 | 800 |
Retained Earnings | Adjustment | ASU 2016-02 Leases |  |  |  |
Leases |  |  |  |
Stockholders' equity |  |  | $ 14 |

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