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Fair Value of Financial Instruments-Adjusted Historical Cost (Details) - USD ($)
$ in Thousands
Nov. 29, 2015
Apr. 27, 2015
Nov. 30, 2014
Mar. 14, 2013
May. 08, 2012
4.25% Yen-denominated Eurobonds due 2016 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate 4.25%        
Senior notes [Member] | 7.625% senior notes due 2020 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate 7.625%        
Senior notes [Member] | 6.875% senior notes due 2022 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate 6.875%     6.875% 6.875%
Senior notes [Member] | 5.00% Senior Notes, Due 2025 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate 5.00% 5.00%      
Bonds [Member] | 4.25% Yen-denominated Eurobonds due 2016 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Stated interest rate 4.25%        
Recurring [Member] | Carrying Value [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Short-term debt carried at adjusted historical cost $ 15,996   $ 31,742    
Total financial liabilities carried at adjusted historical cost 1,157,612   1,214,851    
Recurring [Member] | Carrying Value [Member] | Senior revolving credit facility [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 99,020   100,098    
Recurring [Member] | Carrying Value [Member] | Senior notes [Member] | 7.625% senior notes due 2020 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 0   520,529    
Recurring [Member] | Carrying Value [Member] | Senior notes [Member] | 6.875% senior notes due 2022 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 527,715   528,394    
Recurring [Member] | Carrying Value [Member] | Senior notes [Member] | 5.00% Senior Notes, Due 2025 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 482,145   0    
Recurring [Member] | Carrying Value [Member] | Bonds [Member] | 4.25% Yen-denominated Eurobonds due 2016 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 32,736   34,088    
Recurring [Member] | Fair Value [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Short-term debt carried at adjusted historical cost 15,996   31,742    
Total financial liabilities carried at adjusted historical cost 1,199,909   1,292,581    
Recurring [Member] | Fair Value [Member] | Senior revolving credit facility [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 99,020   100,098    
Recurring [Member] | Fair Value [Member] | Senior notes [Member] | 7.625% senior notes due 2020 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost [1] 0   550,357    
Recurring [Member] | Fair Value [Member] | Senior notes [Member] | 6.875% senior notes due 2022 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost [1] 570,355   575,022    
Recurring [Member] | Fair Value [Member] | Senior notes [Member] | 5.00% Senior Notes, Due 2025 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost 480,945   0    
Recurring [Member] | Fair Value [Member] | Bonds [Member] | 4.25% Yen-denominated Eurobonds due 2016 [Member]          
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]          
Long-term debt carried at adjusted historical cost [1] $ 33,593   $ 35,362    
[1] Fair values are estimated using Level 1 inputs and incorporate mid-market price quotes. Level 1 inputs are inputs which consist of quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date.