v3.8.0.1
Stockholders' Equity - Summary of Pre-tax Intrinsic Values and Total Fair Value of Vested Restricted Stock (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Jan. 01, 2017
Jan. 03, 2016
Restricted stock units (RSU) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pre-tax intrinsic value of outstanding restricted stock $ 456 $ 294 $ 423
Fair value of restricted stock vested 113 98 86
Performance stock units (PSU) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Pre-tax intrinsic value of outstanding restricted stock 118 59 112
Fair value of restricted stock vested $ 17 $ 30 $ 45