v2.4.0.8

Quarterly Information - Quarterly Net Income, Basic Earnings Per Share, and Diluted Earnings Per Share (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 1,059,300 | $ 1,016,900 | $ 1,031,900 | $ 964,200 | $ 884,500 | $ 895,200 | $ 879,700 | $ 795,100 | $ 4,072,330 | $ 3,454,537 | $ 2,734,226
Gross profit | 848,200 | 815,300 | 828,200 | 768,000 | 713,700 | 719,900 | 708,600 | 632,300 | 3,259,747 | 2,774,453 | 2,175,415
Net income | $ 112,200 | $ 111,900 | $ 132,000 | $ 107,900 | $ 110,100 | $ 107,500 | $ 108,600 | $ 88,800 | $ 463,962 | $ 414,959 | $ 292,883
Earnings per share |  |  |  |  |  |  |  |  |  |  |
Basic earnings per share | $ 1.04 | $ 1.03 | $ 1.13 | $ 0.93 | $ 0.95 | $ 0.92 | $ 0.91 | $ 0.75 | $ 4.13 | $ 3.53 | $ 2.46
Diluted earnings per share | $ 1.00 | $ 0.98 | $ 1.09 | $ 0.88 | $ 0.90 | $ 0.86 | $ 0.86 | $ 0.71 | $ 3.94 | $ 3.32 | $ 2.32

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