Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions |
9 Months Ended | |
---|---|---|
Sep. 30, 2019 |
Jan. 01, 2019 |
|
New Accounting Pronouncements or Change in Accounting Principle\ | ||
Operating lease ROU assets | $ 521 | |
Operating lease liability | $ 554 | |
ASU 2016-02 | ||
New Accounting Pronouncements or Change in Accounting Principle\ | ||
Operating lease ROU assets | $ 442 | |
Operating lease liability | $ 446 | |
Minimum | ||
New Accounting Pronouncements or Change in Accounting Principle\ | ||
Lease renewal options | 1 year | |
Maximum | ||
New Accounting Pronouncements or Change in Accounting Principle\ | ||
Lease renewal options | 5 years |