Earnings (Loss) per Share Reconciliation of Basic to Diluted Weighted Average Shares Outstanding (Details) - shares shares in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Sep. 30, 2017 |
Sep. 30, 2016 |
|
| Earnings (Loss) per Share Reconciliation of Basic to Diluted Weighted Average Shares Outstanding [Abstract] | ||||
| Weighted Average Number of Shares Outstanding, Basic | 355,442 | 354,215 | 355,164 | 353,929 |
| Share-based awards | 3,402 | 2,137 | 0 | 2,051 |
| Weighted average shares outstanding (diluted) | 358,844 | 356,352 | 355,164 | 355,980 |