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Unaudited Quarterly Results (Details) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Dec. 31, 2012 | Sep. 29, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amortization of intangibles |  |  |  |  |  |  |  |  | $ 41,530,000 | $ 31,409,000 | $ 29,856,000
Components of Income Tax Expense (Benefit) [Line Items] |  |  |  |  |  |  |  |  |  |  |
Settlement of tax audits |  |  |  | (30,552,000) | (6,035,000) |  |  |  | (30,552,000) | (6,035,000) | (1,617,000)
Recognition of deferred tax asset associated with non-U.S. net operating loss |  |  |  |  | (36,410,000) |  |  |  |  | (36,410,000) |
Unaudited Quarterly Results [Line items] |  |  |  |  |  |  |  |  |  |  |
Net sales | 565,448,000 | 457,317,000 | 451,115,000 | 430,338,000 | 521,766,000 | 449,952,000 | 451,465,000 | 420,458,000 | 1,904,218,000 | 1,843,641,000 | 1,851,184,000
Cost of sales | 228,991,000 | 191,568,000 | 188,329,000 | 174,568,000 | 208,363,000 | 182,702,000 | 179,259,000 | 167,290,000 | 783,456,000 | 737,614,000 | 730,493,000
Gross profit | 336,457,000 | 265,749,000 | 262,786,000 | 255,770,000 | 313,403,000 | 267,250,000 | 272,206,000 | 253,168,000 | 1,120,762,000 | 1,106,027,000 | 1,120,691,000
Selling and administrative expenses | 130,680,000 | 120,563,000 | 123,062,000 | 118,660,000 | 122,147,000 | 115,322,000 | 122,682,000 | 117,119,000 | 492,965,000 | 477,270,000 | 490,011,000
Research and development expenses | 26,975,000 | 23,599,000 | 24,650,000 | 25,312,000 | 24,958,000 | 23,756,000 | 23,943,000 | 23,347,000 | 100,536,000 | 96,004,000 | 92,347,000
Purchased intangibles amortization | 2,625,000 | 2,518,000 | 2,382,000 | 2,393,000 | 2,459,000 | 6,427,000 | 2,458,000 | 2,485,000 | 9,918,000 | 13,829,000 | 9,733,000
Litigation provisions (Note 10) |  |  |  |  | 4,434,000 |  | 3,000,000 |  |  | 7,434,000 |
Operating income | 176,177,000 | 119,069,000 | 112,692,000 | 109,405,000 | 159,405,000 | 121,745,000 | 120,123,000 | 110,217,000 | 517,343,000 | 511,490,000 | 528,600,000
Other expense (Note 3) |  |  | (1,575,000) |  |  |  |  |  | (1,575,000) |  |
Interest expense | (7,927,000) | (7,358,000) | (7,580,000) | (7,185,000) | (7,597,000) | (7,107,000) | (6,878,000) | (6,491,000) | (30,050,000) | (28,073,000) | (21,971,000)
Interest income | 1,075,000 | 946,000 | 1,179,000 | 1,187,000 | 1,224,000 | 1,184,000 | 1,031,000 | 769,000 | 4,387,000 | 4,208,000 | 2,623,000
Income from operations before income taxes | 169,325,000 | 112,657,000 | 104,716,000 | 103,407,000 | 153,032,000 | 115,822,000 | 114,276,000 | 104,495,000 | 490,105,000 | 487,625,000 | 509,252,000
Provision for income taxes | 27,743,000 | 14,609,000 | 15,402,000 | (17,652,000) | (22,912,000) | 16,713,000 | 16,552,000 | 15,829,000 | 40,102,000 | 26,182,000 | 76,284,000
Net income | 141,582,000 | 98,048,000 | 89,314,000 | 121,059,000 | 175,944,000 | 99,109,000 | 97,724,000 | 88,666,000 | 450,003,000 | 461,443,000 | 432,968,000
Net income per basic common share | $ 1.67 | $ 1.15 | $ 1.04 | $ 1.41 | $ 2.03 | $ 1.13 | $ 1.11 | $ 1.00 | $ 5.27 | $ 5.25 | $ 4.77
Weighted-average number of basic common shares | 85,006 | 85,185 | 85,482 | 86,049 | 86,712 | 87,411 | 88,317 | 88,992 | 85,426 | 87,841 | 90,833
Net income per diluted common share | $ 1.65 | $ 1.14 | $ 1.03 | $ 1.39 | $ 2.00 | $ 1.12 | $ 1.09 | $ 0.98 | $ 5.20 | $ 5.19 | $ 4.69
Weighted-average number of diluted common shares and equivalents | 86,017 | 86,364 | 86,576 | 87,215 | 87,851 | 88,451 | 89,381 | 90,269 | 86,546 | 88,979 | 92,325
Related to Fiscal Year 2012 [Member] |  |  |  |  |  |  |  |  |  |  |
Components of Income Tax Expense (Benefit) [Line Items] |  |  |  |  |  |  |  |  |  |  |
R&D Tax Credit |  |  |  | 3,000,000 |  |  |  |  | 3,000,000 |  |
Trademarks [Member] |  |  |  |  |  |  |  |  |  |  |
Goodwill And Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amortization of intangibles |  |  |  |  |  | $ 4,000,000 |  |  |  | $ 4,000,000 |

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