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Borrowings - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended |  |  | 0 Months Ended | 1 Months Ended | 9 Months Ended |  | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 28, 2014 | Sep. 28, 2014 | Dec. 31, 2013 | Sep. 29, 2013 | May 21, 2014 5.25% Senior Notes due 2024 | May 21, 2014 5.25% Senior Notes due 2024 | Sep. 28, 2014 5.25% Senior Notes due 2024 | Dec. 31, 2013 5.25% Senior Notes due 2024 | Sep. 28, 2014 5.25% Senior Notes due 2024 Redemption prior to June 15, 2019 | Sep. 28, 2014 5.25% Senior Notes due 2024 Redemption prior to June 15, 2017 | Sep. 28, 2014 5.25% Senior Notes due 2024 Minimum | Sep. 28, 2014 5.25% Senior Notes due 2024 Maximum | Dec. 31, 2013 3.875% Convertible Senior Subordinated Notes | Sep. 28, 2014 3.875% Convertible Senior Subordinated Notes | Sep. 28, 2014 6.875% Senior Subordinated Notes due 2019 | Dec. 31, 2013 6.875% Senior Subordinated Notes due 2019
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
5.25% Senior Notes due 2024 | $ 250,000,000 | $ 250,000,000 | $ 0 |  |  | $ 250,000,000 |  |  |  |  |  |  |  |  |  |
Debt instrument, interest payment commencing date |  |  |  |  |  | Dec. 15, 2014 |  |  |  |  |  |  |  |  |  |
Debt instrument, stated interest rate | 3.875% | 3.875% | 3.875% | 3.875% |  | 5.25% | 5.25% | 5.25% |  |  |  |  | 3.875% | 3.875% | 6.875% | 6.875%
Transaction fees |  |  |  |  |  | 4,500,000 |  |  |  |  |  |  |  |  |  |
Proceed from senior notes used to repay revolving line of credit |  |  |  |  | 245,000,000 |  |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount any time on or after June 15, 2019 |  |  |  |  |  |  |  |  |  |  | 100.00% | 102.625% |  |  |  |
Declining percent of redemption price to principal amount on June 15, 2022 |  |  |  |  |  |  | 0.875% |  |  |  |  |  |  |  |  |
Debt instrument, earliest date of redemption |  |  |  |  |  |  | Jun. 15, 2019 |  |  |  |  |  |  |  |  |
Redemption price percentage |  |  |  |  |  |  |  |  | 100.00% | 105.25% |  |  |  |  |  |
Make-whole premium as percentage of principal amount of 2024 Notes subject to redemption |  |  |  |  |  |  |  |  | 1.00% |  |  |  |  |  |  |
Basis spread |  |  |  |  |  |  |  |  | 0.50% |  |  |  |  |  |  |
Percent of principal amount of notes redeemable |  |  |  |  |  |  |  |  |  | 35.00% |  |  |  |  |  |
Convertible notes, threshold number of trading days to trigger conversion feature |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 days |  |
Convertible notes, threshold consecutive trading days |  |  |  |  |  |  |  |  |  |  |  |  |  | 30 days |  |
Convertible notes, threshold percentage of stock price trigger |  |  |  |  |  |  |  |  |  |  |  |  | 130.00% | 130.00% |  |
Conversion price, per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 61.32 |  |
Convertible notes, stock price trigger |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 79.72 |  |
Total long-term debt | $ 1,060,656,000 | $ 1,060,656,000 | $ 1,281,587,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility interest rate | 1.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument maturity date |  | Jul. 16, 2018 |  |  |  | Jun. 15, 2024 | Jun. 15, 2024 |  |  |  |  |  |  | Aug. 01, 2017 | Jun. 01, 2019 | Jun. 01, 2019

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