Debt and Interest Expense Senior Notes and Senior Subordinated Notes (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 3 Months Ended 0 Months Ended
Apr. 29, 2013
Mar. 29, 2015
Sep. 28, 2014
Apr. 01, 2014
Apr. 02, 2007
Mar. 31, 2014
Senior Notes | 4.875% Senior Notes Due 2021            
Debt Instrument [Line Items]            
Fixed interest rate 4.875%       4.875%  
Proceeds from Issuance of Unsecured Debt $ 350.0          
Early redemption percent of principal amount plus the applicable premium as of, and accrued and unpaid interest to, the redemption date   100.00%        
Debt Instrument, Applicable Premium, Percentage of Principal Amount 1.00%          
Early redemption percent the Company may redeem up to the aggregate principal amount through September 1, 2013   35.00%        
Early redemption percent of principal amount of note required to be outstanding immediately after the occurence of each such redemption   50.00%        
Period each redemption is required to occur after the closing of each such equity offering   120 days        
Senior Notes | 8.25% Senior Notes due 2017            
Debt Instrument [Line Items]            
Early redemption percent of principal amount plus accrued and unpaid interest if any to redeem until September 1, 2013   104.875%        
Notes Payable, Other Payables [Member] | Amended Credit Agreement [Member]            
Debt Instrument [Line Items]            
Debt Instrument, Net Leverage Ratio Threshold     4.25      
Basis points added to the interest rate     (25.00%)      
Notes Payable, Other Payables [Member] | Debt Instrument, 3% Notes Payable Due 2018 [Member]            
Debt Instrument [Line Items]            
Notes Payable Face Amount           $ 14.9
Debt Instrument, Term       4 years    
Fixed interest rate           3.00%