Debt - Schedule of Debt (Parenthetical) (Detail) - USD ($) |
Mar. 28, 2015 |
Dec. 27, 2014 |
Dec. 28, 2013 |
|---|---|---|---|
| Senior Notes [Member] | |||
| Debt Instrument [Line Items] | |||
| Long-term debt, face value | $ 625,000,000 | $ 625,000,000 | $ 250,000,000 |
| Original issuance discount | 25,200,000 | 26,500,000 | 4,000,000 |
| Credit Facility [Member] | |||
| Debt Instrument [Line Items] | |||
| Long-term debt, face value | 414,600,000 | 415,700,000 | 419,900,000 |
| Original issuance discount | $ 2,100,000 | $ 2,300,000 | $ 2,900,000 |