Debt (Components of Long-Term Debt) (Details)
€ in Millions, $ in Millions |
Sep. 30, 2016
USD ($)
|
Sep. 30, 2016
EUR (€)
|
Dec. 31, 2015
USD ($)
|
Dec. 31, 2015
EUR (€)
|
Jul. 01, 2015
EUR (€)
|
May 12, 2015 |
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 3,796
|
|
$ 4,014
|
|
|
|
| Unamortized discount |
6
|
|
7
|
|
|
|
| Less: Unamortized debt issuance costs |
45
|
|
53
|
|
|
|
| Less: Current maturities |
32
|
|
39
|
|
|
|
| Total long-term debt |
3,713
|
|
3,915
|
|
|
|
| Senior unsecured notes [Member] | 6.625% Senior Notes Due May 2023 [Member] |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 1,234
|
|
$ 1,350
|
|
|
|
| Debt instrument interest rate |
6.625%
|
6.625%
|
6.625%
|
6.625%
|
|
|
| Senior unsecured notes [Member] | 7.00% Senior Notes Due May 2025 [Member] |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 750
|
|
$ 750
|
|
|
|
| Debt instrument interest rate |
7.00%
|
7.00%
|
7.00%
|
7.00%
|
|
7.00%
|
| Senior unsecured notes [Member] | Senior Notes 6.125% Due May 2023 [Member] |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 362
|
|
$ 395
|
|
|
|
| Long-term debt, gross | € |
|
€ 322
|
|
€ 360
|
€ 360
|
|
| Debt instrument interest rate |
6.125%
|
6.125%
|
6.125%
|
6.125%
|
|
6.125%
|
| Other [Member] |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 19
|
|
$ 26
|
|
|
|
| Senior secured term loan [Member] |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Long-term debt |
$ 1,431
|
|
$ 1,493
|
|
|
|
| Debt instrument interest rate |
1.00%
|
1.00%
|
|
|
|
|