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Share-Based Compensation - Weighted-Average Assumptions Used for Grants of Stock Options and SARs (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jul. 02, 2016
Jul. 02, 2016
Jul. 04, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Risk free interest rate, minimum 0.25%   0.02%
Risk free interest rate, maximum 1.75%   2.14%
Stock Option and Stock Appreciation Rights (SARs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected dividend yield   0.00% 0.00%
Forfeiture rate   9.01% 10.24%
Volatility   43.14% 33.98%
Risk free interest rate   1.29% 1.53%
Expected weighted-average life   5 years 3 months 30 days 5 years 3 months 25 days
Fair value of SARs granted (in millions)   $ 12 $ 11
Weighted-average grant date fair value of SARs granted (per underlying share)   $ 19.95 $ 35.25