Stock-Based Compensation - Summary of Company's Stock Option, Performance Share Unit and Restricted Share Activity (Detail) (USD $) | 3 Months Ended |
In Thousands, except Per Share data, unless otherwise specified | 3-May-15 |
Stock Options [Member] | |
Number | |
Number of Stock Options, Beginning Balance | 879 |
Number of Stock Options, Granted | 151 |
Number of Stock Options, Exercised/vested | 128 |
Number of Stock Options, Forfeited | 58 |
Number of Stock Options, Ending Balance | 844 |
Number of Stock Options, Exercisable | 303 |
Weighted-Average Exercise Price | |
Weighted-Average Exercise Price, Options, Beginning Balance (in dollars per share) | $39.25 |
Weighted-Average Exercise Price, Options, Granted (in dollars per share) | $64.83 |
Weighted-Average Exercise Price, Options, Exercised/vested (in dollars per share) | $21.83 |
Weighted-Average Exercise Price, Options, Forfeited (in dollars per share) | $53.09 |
Weighted-Average Exercise Price, Options, Ending Balance (in dollars per share) | $45.53 |
Weighted-Average Exercise Price, Options, Exercisable (in dollars per share) | $29.85 |
Performance-Based Restricted Stock Units [Member] | |
Number of Performance-Based Restricted Stock Units and Restricted Shares | |
Number of Stock, Beginning Balance | 452 |
Number of Stock, Granted | 133 |
Number of Stock, Exercised/vested | 40 |
Number of Stock, Forfeited | 84 |
Number of Stock, Ending Balance | 461 |
Weighted-Average Grant Date Fair Value | |
Weighted-Average Grant Date Fair Value, Beginning Balance (in dollars per share) | $59.27 |
Weighted-Average Grant Date Fair Value, Granted (in dollars per share) | $64.83 |
Weighted-Average Grant Date Fair Value, Exercised/vested (in dollars per share) | $68.45 |
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share) | $65.96 |
Weighted-Average Grant Date Fair Value, Ending Balance (in dollars per share) | $58.87 |
Restricted Shares [Member] | |
Number of Performance-Based Restricted Stock Units and Restricted Shares | |
Number of Stock, Beginning Balance | 62 |
Number of Stock, Granted | 0 |
Number of Stock, Exercised/vested | 0 |
Number of Stock, Forfeited | 4 |
Number of Stock, Ending Balance | 58 |
Weighted-Average Grant Date Fair Value | |
Weighted-Average Grant Date Fair Value, Beginning Balance (in dollars per share) | $42.86 |
Weighted-Average Grant Date Fair Value, Granted (in dollars per share) | $0 |
Weighted-Average Grant Date Fair Value, Exercised/vested (in dollars per share) | $0 |
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share) | $38.25 |
Weighted-Average Grant Date Fair Value, Ending Balance (in dollars per share) | $43.12 |
Restricted Stock Units [Member] | |
Number of Performance-Based Restricted Stock Units and Restricted Shares | |
Number of Stock, Beginning Balance | 186 |
Number of Stock, Granted | 167 |
Number of Stock, Exercised/vested | 4 |
Number of Stock, Forfeited | 11 |
Number of Stock, Ending Balance | 338 |
Weighted-Average Grant Date Fair Value | |
Weighted-Average Grant Date Fair Value, Beginning Balance (in dollars per share) | $45.75 |
Weighted-Average Grant Date Fair Value, Granted (in dollars per share) | $64.85 |
Weighted-Average Grant Date Fair Value, Exercised/vested (in dollars per share) | $52.59 |
Weighted-Average Grant Date Fair Value, Forfeited (in dollars per share) | $50.23 |
Weighted-Average Grant Date Fair Value, Ending Balance (in dollars per share) | $54.97 |