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Payout Percentage of ROIC Awards (Detail) - Performance Contingent Return On Invested Capital Shares | 12 Months Ended
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Dec. 31, 2016
2012 Award | Fiscal 2014 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Payout percentage | 125.00%
2013 Award | Fiscal 2015 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Payout percentage | 125.00%
2014 Award | Fiscal 2016 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Payout percentage | 96.00%

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