Leases - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | ||
---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Jan. 01, 2019 |
|
Lessee, Lease, Description [Line Items] | |||
Lease assets | $ 127 | ||
Lease liabilities | 124 | ||
Lease income | $ 14 | $ 10 | |
Minimum | |||
Lessee, Lease, Description [Line Items] | |||
Operating lease, term of contract | 2 years | ||
Maximum | |||
Lessee, Lease, Description [Line Items] | |||
Operating lease, term of contract | 10 years | ||
Accounting Standards Update 2016-02 | |||
Lessee, Lease, Description [Line Items] | |||
Lease assets | $ 68 | ||
Lease liabilities | $ 66 |