Stock-Based Compensation (Details 2) (USD $) | 3 Months Ended | 12 Months Ended |
Share data in Thousands, except Per Share data, unless otherwise specified | Mar. 31, 2015 | Apr. 01, 2014 | Dec. 30, 2014 |
Stock options | | | |
Stock-Based Compensation | | | |
Weighted average fair value at the grant date for options issued (in dollars per share) | $14.17 | $15.48 | |
Weighted average assumptions under Black-Scholes valuation model | | | |
Expected option term | 6 years 7 months 6 days | 6 years 6 months | |
Expected stock price volatility (as a percent) | 31.30% | 32.90% | |
Risk free interest rate (as a percent) | 1.90% | 2.20% | |
Dividend yield (as a percent) | 1.40% | 1.20% | |
Stock option activity, shares | | | |
Outstanding, at the beginning of the period (in shares) | 4,023 | | |
Granted (in shares) | 312 | | |
Exercised (in shares) | -280 | | |
Forfeited or cancelled (in shares) | -12 | | |
Outstanding at the end of the period (in shares) | 4,043 | | 4,023 |
Exercisable at the end of the period (in shares) | 2,434 | | |
Weighted Average Exercise price | | | |
Outstanding at the beginning of the period (in dollars per share) | $26.34 | | |
Granted (in dollars per share) | $48.01 | | |
Exercised (in dollars per share) | $20.25 | | |
Forfeited or cancelled (in dollars per share) | $24.87 | | |
Outstanding at the end of the period (in dollars per share) | $28.43 | | $26.34 |
Exercisable at the end of the period (in dollars per share) | $24.64 | | |
Weighted Average Remaining Contractual Term | | | |
Outstanding at the beginning of the period | 3 years 10 months 24 days | | 3 years 8 months 12 days |
Outstanding at the end of the period | 3 years 10 months 24 days | | 3 years 8 months 12 days |
Exercisable at the end of the period | 2 years 10 months 24 days | | |
Aggregate Intrinsic Value | | | |
Outstanding at the beginning of the period | $97,406,000 | | |
Outstanding at the end of the period | 84,484,000 | | 97,406,000 |
Exercisable at the end of the period | 60,095,000 | | |
Total intrinsic value of options exercised | 8,500,000 | 8,900,000 | |
Unrecognized Stock-based Compensation Expense | | | |
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units | 14,200,000 | | |
Expected weighted average period for recognition of compensation expense related to unvested stock option | 2 years 6 months | | |
Restricted stock | | | |
Unrecognized Stock-based Compensation Expense | | | |
Total unrecognized stock-based compensation expenses related to unvested stock options, restricted shares and restricted share units | 46,300,000 | | |
Expected weighted average period for recognition of compensation expense related to unvested stock option | 3 years 3 months 18 days | | |
Restricted Shares and Restricted Share Units | | | |
Outstanding at the beginning of the period (in shares) | 1,820 | | |
Granted (in shares) | 297 | | |
Vested (in shares) | -213 | | |
Forfeited (in shares) | -39 | | |
Outstanding at the end of the period (in shares) | 1,865 | | 1,820 |
Fair value of shares vested | $5,700,000 | $3,700,000 | |
Weighted Average Fair Value | | | |
Outstanding at the beginning of the period (in dollars per share) | $37.12 | | |
Granted (in dollars per share) | $48.48 | | $48.11 |
Vested (in dollars per share) | $26.89 | | |
Forfeited (in dollars per share) | $35.40 | | |
Outstanding at the end of the period (in dollars per share) | $40.14 | | $37.12 |