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Share-based Compensation and Incentive Plans (Narrative) (Details) - USD ($) | 1 Months Ended | 12 Months Ended | 36 Months Ended
--- | --- | --- | ---
May 31, 2016 | May 31, 2012 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Expected term |  |  | 10 years |  |  |  |  |
Income tax benefit recognized in net income for share-based compensation |  |  | $ 3,000,000 | $ 2,000,000 | $ 4,000,000 |  |  |
Share-based compensation expense |  |  | 12,000,000 | $ 10,000,000 | $ 12,000,000 |  |  |
Cost of Sales |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  | 2,000,000 |  |  |  |  |
Selling, General and Administrative Expenses |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Share-based compensation expense |  |  | $ 10,000,000 |  |  |  |  |
Stock Compensation Plan |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized | 4,400,000 | 2,000,000 |  |  |  |  |  |
Common stock reserved for issuance (in shares) | 16,400,000 |  | 5,500,000 |  |  |  |  | 5,500,000
Stock Compensation Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of shares authorized | 4,400,000 |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) | 9,900,000 |  | 2,600,000 |  |  |  |  | 2,600,000
Stock Options |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Number of options granted |  |  | 0 | 0 | 0 |  |  |
Total intrinsic values of options exercised |  |  | $ 300,000 | $ 100,000 | $ 400,000 |  |  |
Unrecognized compensation cost, net of estimated forfeitures |  |  | 0 |  |  |  |  | $ 0
Stock option compensation expense |  |  | 0 | 0 | 1,000,000 |  |  |
Income tax benefit recognized in net income for share-based compensation |  |  | $ 0 | $ 0 | $ 0 |  |  |
Maximum withhold percentage |  |  | 10.00% |  |  |  |  | 10.00%
Percentage of discount on stock price |  |  | 5.00% |  |  |  |  |
ESPP stock issued (in shares) |  |  | 166,000 | 164,000 |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Unrecognized compensation cost, net of estimated forfeitures |  |  | $ 13,000,000 |  |  |  |  | $ 13,000,000
Weighted average grant-date fair value per share (usd per share) |  |  | $ 19.01 | $ 15.93 | $ 15.11 |  |  |
Restricted stock compensation expense |  |  | $ 12,000,000 | $ 10,000,000 | $ 11,000,000 |  |  |
Income tax benefit recognized in net income for share-based compensation |  |  | $ 3,000,000 | 2,000,000 | 4,000,000 |  |  |
Weighted average recognizing period of unrecognized compensation cost (in years) |  |  | 1 year 9 months 29 days |  |  |  |  |
Weighted-Average Fair Value On Vesting Date |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Total fair value of shares vested based on the weighted-average fair value |  |  | $ 14,000,000 | 10,000,000 | 10,000,000 |  |  |
Weighted-Average Fair Value On Grant Date |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Total fair value of shares vested based on the weighted-average fair value |  |  | $ 11,000,000 | $ 10,000,000 | $ 11,000,000 |  |  |
Cash Performance Awards |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Percentage of average total shareholder return |  |  | 50.00% | 50.00% | 50.00% |  |  |
Percentage of job income sold |  |  | 50.00% | 50.00% | 50.00% |  |  |
Period of target level average |  |  | 3 years |  |  |  |  |
Number of shares, granted |  |  | 19,000,000 | 18,000,000 | 19,000,000 |  |  |
Award vesting period |  |  |  |  |  |  |  | 3 years
Number of cash performance based award units forfeited (in shares) |  |  | 3,000,000 | 3,000,000 | 5,000,000 |  |  |
Outstanding awards balance (in shares) |  |  | 49,000,000 |  |  |  |  | 49,000,000
Expense for cash performance awards |  |  | $ 34,000,000 | $ 15,000,000 | $ 22,000,000 |  |  |
Liability for awards due within one year |  |  | 27,000,000 | 13,000,000 |  |  |  | $ 27,000,000
Liability for awards |  |  | $ 23,000,000 | $ 17,000,000 |  |  |  | $ 23,000,000
Cash Performance Awards | Scenario, Forecast |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 3 years | 3 years |

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