v3.8.0.1

Stockholders' Equity - Narrative - Share Repurchases (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Jan. 01, 2017 | Jan. 03, 2016 | May 04, 2017 | Jul. 28, 2016
Class of Stock [Line Items] |  |  |  |  |
Common stock repurchases | $ 251 | $ 249 | $ 274 |  |
Common stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Repurchase of common shares (in shares) | 1.4 | 1.8 | 1.7 |  |
Common stock repurchases | $ 251 | $ 249 | $ 274 |  |
Dollar amount remaining in authorized stock repurchase program | $ 100 |  |  |  |
Common stock [Member] | July 2016 Share Repurchase Plan [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock repurchase program authorized amount |  |  |  |  | $ 250
Common stock [Member] | May 2017 Share Repurchase Plan [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock repurchase program authorized amount |  |  |  | $ 250 |

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