Goodwill and Other Intangible Assets - Intangible Assets - Amortization (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Finite-lived Intangible Assets [Roll Forward] |
|
|
|
| Finite-lived intangible assets, accumulated amortization, beginning |
$ (15)
|
|
|
| Finite-lived intangible assets, net, beginning |
84
|
|
|
| Finite-lived intangible assets, amortization |
(14)
|
$ (12)
|
$ (4)
|
| Finite-lived intangible assets, accumulated amortization, disposals |
5
|
|
|
| Finite-lived intangible assets, accumulated amortization, ending |
(24)
|
(15)
|
|
| Finite-lived intangible assets, net, ending |
67
|
84
|
|
| Customer relationships |
|
|
|
| Finite-lived Intangible Assets [Roll Forward] |
|
|
|
| Finite-lived intangible assets, accumulated amortization, beginning |
(13)
|
|
|
| Finite-lived intangible assets, amortization |
(12)
|
|
|
| Finite-lived intangible assets, accumulated amortization, disposals |
5
|
|
|
| Finite-lived intangible assets, accumulated amortization, ending |
(20)
|
(13)
|
|
| Other intangible assets |
|
|
|
| Finite-lived Intangible Assets [Roll Forward] |
|
|
|
| Finite-lived intangible assets, accumulated amortization, beginning |
(2)
|
|
|
| Finite-lived intangible assets, amortization |
(2)
|
|
|
| Finite-lived intangible assets, accumulated amortization, disposals |
0
|
|
|
| Finite-lived intangible assets, accumulated amortization, ending |
$ (4)
|
$ (2)
|
|