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Capital Stock (Details Textual) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 24, 2015
Class of Stock [Line Items] |  |  |  |
Common Stock, shares authorized | 750,000 | 750,000 |  |
Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |  |
Dividends declared per share (in usd per share) | $ 1.12 | $ 1.04 | $ 0.96 |
Shares repurchased | 678 | 772 | 536 |
Shares repurchased, value | $ 68 | $ 61 |  |
2015 Stock Repurchase Program |  |  |  |
Class of Stock [Line Items] |  |  |  |
Authorized amount |  |  |  | $ 500
Shares repurchased | 600 | 700 |  |
Shares repurchased, value | $ 60 | $ 50 |  |
Remaining authorized repurchase amount | $ 228 |  |  |
Settlement of Employee Tax Withholding Obligations |  |  |  |
Class of Stock [Line Items] |  |  |  |
Shares repurchased | 100 | 100 |  |
Shares repurchased, value | $ 8 | $ 11 |  |

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