Consolidated Statements of Stockholders Equity - USD ($) $ in Millions |
Total |
Common Stock [Member] |
Treasury Stock [Member] |
Additional Paid-in Capital [Member] |
Retained Earnings (Accumulated Deficit) [Member] |
AOCI Attributable to Parent [Member] |
Noncontrolling Interest [Member] |
|---|---|---|---|---|---|---|---|
| Balance at Dec. 31, 2013 | $ 3,568 | $ 1 | $ (1,230) | $ 12,389 | $ (7,486) | $ (160) | $ 54 |
| Treasury stock transactions | (1,115) | 0 | (1,115) | 0 | 0 | 0 | 0 |
| Retirement of shares held in treasury | 0 | ||||||
| Stock-based compensation expense | 31 | 0 | 0 | 31 | 0 | 0 | 0 |
| Option exercises | 20 | 0 | 0 | 20 | 0 | 0 | 0 |
| Distribution to the noncontrolling interest | (15) | 0 | 0 | 0 | 0 | 0 | (15) |
| Net income | 961 | 0 | 0 | 0 | 946 | 0 | 15 |
| Other comprehensive income (loss) | (19) | 0 | 0 | 0 | 0 | (18) | (1) |
| Balance at Dec. 31, 2014 | 3,431 | 1 | (2,345) | 12,440 | (6,540) | (178) | 53 |
| Treasury stock transactions | (541) | 0 | (541) | 0 | 0 | 0 | 0 |
| Retirement of shares held in treasury | (1) | (1) | 2,885 | (2,885) | 0 | 0 | 0 |
| Stock-based compensation expense | 31 | 0 | 0 | 31 | 0 | 0 | 0 |
| Option exercises | 8 | 0 | 0 | 8 | 0 | 0 | 0 |
| Distribution to the noncontrolling interest | (10) | 0 | 0 | 0 | 0 | 0 | (10) |
| Net income | 249 | 0 | 0 | 0 | 235 | 0 | 14 |
| Other comprehensive income (loss) | 0 | 0 | 0 | 0 | 0 | (1) | 1 |
| Balance at Dec. 31, 2015 | 3,167 | 0 | (1) | 9,594 | (6,305) | (179) | 58 |
| Treasury stock transactions | (6) | 0 | (6) | 0 | 0 | 0 | 0 |
| Retirement of shares held in treasury | 0 | ||||||
| Stock-based compensation expense | 30 | 0 | 0 | 30 | 0 | 0 | 0 |
| Option exercises | 1 | 0 | 0 | 1 | 0 | 0 | 0 |
| Distribution to the noncontrolling interest | (9) | 0 | 0 | 0 | 0 | 0 | 9 |
| Net income | 111 | 0 | 0 | 0 | 92 | 0 | 19 |
| Other comprehensive income (loss) | 45 | 0 | 0 | 0 | 0 | 42 | 3 |
| Balance at Dec. 31, 2016 | $ 3,339 | $ 0 | $ (7) | $ 9,625 | $ (6,213) | $ (137) | $ 71 |