Indebtedness - Senior Subordinated Notes and Early Extinguishment of Debt - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended	6 Months Ended
	Jul. 01, 2015	May. 27, 2014	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Instrument [Line Items]
Loss on early extinguishment of debt			$ 24,596		$ 24,596
Subsequent Event
Debt Instrument [Line Items]
Loss on early extinguishment of debt	$ 22,500
Subordinated Debt
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount				101.00%
Subordinated Debt | 8.0% Senior Subordinated notes due 2019
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount		104.00%
Announced call for redemption amount of debt		$ 300,000
Loss on early extinguishment of debt			$ 24,596
Debt instrument, redemption description				On May 27, 2014, we announced a call for the redemption of $300.0 million of our outstanding 8.0% senior subordinated notes due 2019 at 104.0% of par plus accrued and unpaid interest, which were redeemed on June 26, 2014.
Senior Subordinated Notes | 6.75% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Debt instrument, redemption description				On July 1, 2015, we announced a call for the redemption of $500.0 million of our outstanding 6.75% senior subordinated notes due 2020 at a price of 103.375% of par plus accrued and unpaid interest and we estimate we will recognize a loss on early extinguishment of debt of $22.5 million. The notes will be redeemed on August 3, 2015
Senior Subordinated Notes | Subsequent Event | 6.75% Senior Subordinated Notes Due 2020
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount	103.375%
Announced call for redemption amount of debt	$ 500,000