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Loans, Overdrafts and Long-Term Debt - Additional Information (Detail)
12 Months Ended
May. 19, 2014
USD ($)
May. 15, 2014
USD ($)
Feb. 19, 2014
USD ($)
Jan. 30, 2016
USD ($)
Jan. 31, 2015
USD ($)
Feb. 01, 2014
USD ($)
Oct. 31, 2015
May. 29, 2014
USD ($)
May. 24, 2011
USD ($)
Debt Instrument [Line Items]                  
Amortization related to capitalized fees       $ 3,600,000 $ 7,400,000 $ 400,000      
Extension of asset-backed facility note purchase agreement       1 year          
Revolving credit facility       $ 0 0        
Securitization facility       600,000,000 600,000,000        
Bank overdrafts       24,400,000 71,600,000        
Zale                  
Debt Instrument [Line Items]                  
Face amount               $ 1,400,000,000  
Term Loan                  
Debt Instrument [Line Items]                  
Proceeds from debt, net of issuance costs       0 400,000,000 $ 0      
Unsecured Bridge Facility | Zale                  
Debt Instrument [Line Items]                  
Face amount     $ 800,000,000            
Debt instrument, maturity period     364 days            
Capitalized fees         4,000,000        
Senior Unsecured Notes Due in 2024 | Signet UK Finance plc                  
Debt Instrument [Line Items]                  
Face amount $ 400,000,000                
Capitalized issuance costs written off       1,200,000 500,000        
Amortization related to capitalized fees       700,000 500,000        
Stated interest rate 4.70%                
Proceeds from debt, net of issuance costs $ 393,900,000                
Capitalized fees       7,000,000          
Credit Facility                  
Debt Instrument [Line Items]                  
Amortization related to capitalized fees       $ 1,300,000 $ 900,000        
Credit Facility | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Credit facility, maximum borrowing capacity                 $ 400,000,000
Debt instrument, maturity period       5 years          
Weighted average interest rate         1.14%   1.18%    
Covenant, maximum leverage ratio       2.50          
Covenant, minimum coverage ratio       1.40          
Capitalized fees       $ 6,700,000          
Capitalized issuance costs written off       2,200,000 $ 900,000        
Stand-by letters of credit       28,800,000 25,400,000        
Credit Facility | Term Loan                  
Debt Instrument [Line Items]                  
Face amount       400,000,000.0          
Remaining balance of term loan       $ 365,000,000 $ 390,000,000        
Weighted average interest rate       1.48% 1.52%        
Credit Facility | Term Loan | Year One [Member]                  
Debt Instrument [Line Items]                  
Quarterly repayment rate       5.00%          
Credit Facility | Term Loan | Year Two [Member]                  
Debt Instrument [Line Items]                  
Quarterly repayment rate       7.50%          
Credit Facility | Term Loan | Year Three [Member]                  
Debt Instrument [Line Items]                  
Quarterly repayment rate       10.00%          
Credit Facility | Term Loan | Year Four [Member]                  
Debt Instrument [Line Items]                  
Quarterly repayment rate       12.50%          
Credit Facility | Term Loan | Year Five [Member]                  
Debt Instrument [Line Items]                  
Quarterly repayment rate       15.00%          
May 2011 Credit Facility [Member] | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Amortization related to capitalized fees         $ 900,000        
Securitization Facility                  
Debt Instrument [Line Items]                  
Face amount   $ 600,000,000              
Debt instrument, maturity period   2 years              
Weighted average interest rate       1.61% 1.50%        
Capitalized issuance costs written off       $ 2,400,000 $ 900,000        
Amortization related to capitalized fees       1,500,000 $ 900,000        
Capitalized fees       $ 2,800,000