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Share-Based Compensation - Fair value of restricted stock awards vested and cash paid for restricted stock awards and performance share units (Details) - USD ($)
$ in Millions
3 Months Ended
Apr. 02, 2016
Apr. 04, 2015
Restricted Stock Units    
Share-Based Compensation    
Fair value of awards vested $ 17 $ 22
Cash paid 12 18
Performance Share Units    
Share-Based Compensation    
Cash paid $ 13 $ 17