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Stockholders' Equity (Common Stock Repurchase Programs) (Details) - USD ($) shares in Millions | 12 Months Ended | 61 Months Ended
--- | --- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Dec. 31, 2017
Common Stock Repurchase Programs |  |  |
Number of shares repurchased (in shares) |  |  | 11.8
Authorizations remaining | $ 824,200,000 |  |
2012 Authorization |  |  |
Common Stock Repurchase Programs |  |  |
Common stock authorized amount | 1,000,000,000.0 |  |
2014 Authorization |  |  |
Common Stock Repurchase Programs |  |  |
Common stock authorized amount | 1,000,000,000.0 |  |
Common stock repurchased | $ 0 | $ 5,200,000 |
Number of shares repurchased (in shares) | 0.0 | 0.1 |
Twenty Twelve and Twenty Fourteen Authorization [Member] |  |  |
Common Stock Repurchase Programs |  |  |
Common stock repurchased |  |  | $ 1,200,000,000
Repurchase program authorized in 2010 |  |  |
Common Stock Repurchase Programs |  |  |
Common stock authorized amount | $ 30,000,000 |  |
Common stock repurchased | $ 0 | $ 0 |
Number of shares repurchased (in shares) | 0.0 | 0.0 |

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