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Stock Based Compensation - Additional Information (Detail) - $ / shares shares in Millions | 1 Months Ended | 9 Months Ended
--- | --- | ---
Jan. 31, 2016 | Jan. 31, 2014 | Oct. 02, 2016 | Oct. 04, 2015
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Stock options term |  |  | 7 years |
Service-Based Restricted Stock Units | Employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Restricted stock unit awards granted |  |  | 1.2 | 1.5
Weighted average grant date fair value of restricted stock units granted |  |  | $ 18.49 | $ 17.27
Service-Based Restricted Stock Units | Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Restricted stock unit awards granted |  |  | 0.1 | 0.1
Weighted average grant date fair value of restricted stock units granted |  |  | $ 18.71 | $ 20.21
Service-Based Restricted Stock Units | Executive Officer |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Number of service-based stock options granted to executive officers |  |  | 0.1 | 0.1
Weighted average grant date fair value of stock options granted to executive officers |  |  | $ 5.30 | $ 4.43
Restricted Stock Units | Employees |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  | 4 years |
Restricted Stock Units | Director |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  | 1 year |
Percentage of awards vesting on the first anniversary of grant date |  |  | 100.00% |
Stock Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Period of stock granted to employees and executive officers vest in equal installments |  |  | 4 years |
TSR Performance-Based Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Total shareholder return performance measurement period | 3 years |  |  |
Minimum age of retirement to be eligible for PRSUs |  | 60 years |  |
Minimum years of service for retirement to be eligible for PRSUs |  | 10 years |  |
Restricted stock unit awards granted |  |  | 0.1 | 0.2
Weighted average grant date fair value of restricted stock units granted |  |  | $ 20.29 | $ 18.21
Estimated annual dividend amount per share |  |  | 0.24 |
Stock price |  |  | $ 19.43 | $ 18.10
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche One |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Percentage of vesting of target shares upon performance achieved | 200.00% |  |  |
TSR Performance-Based Restricted Stock Units | Share-based Compensation Award, Tranche Two |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Percentage of vesting of target shares upon performance achieved | 0.00% |  |  |
PBIT PRSUs |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Total shareholder return performance measurement period | 3 years |  |  |
Restricted stock unit awards granted |  |  | 0.1 |
Weighted average grant date fair value of restricted stock units granted |  |  | $ 18.71 |
PBIT PRSUs | Share-based Compensation Award, Tranche One |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Percentage of vesting of target shares upon performance achieved | 200.00% |  |  |
PBIT PRSUs | Share-based Compensation Award, Tranche Two |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award |  |  |  |
Percentage of vesting of target shares upon performance achieved | 0.00% |  |  |

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- Definition Amount of dividends expected to be paid to holders of the underlying shares or contracted instruments over the term of the instruments life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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