XML 103 R88.htm IDEA: XBRL DOCUMENT v2.4.1.9
Warranty reserve - Warranty reserve rollforward (Details) (USD $)
In Millions, unless otherwise specified
May 02, 2015
Jan. 31, 2015
May 03, 2014
Feb. 01, 2014
Product Warranty Liability [Line Items]        
Accrued Rent $ 44.6us-gaap_AccruedRentNoncurrent $ 44.9us-gaap_AccruedRentNoncurrent $ 19.4us-gaap_AccruedRentNoncurrent $ 19.1us-gaap_AccruedRentNoncurrent
Current liabilities        
Product Warranty Liability [Line Items]        
Accrued Rent 17.7us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentLiabilitiesMember		 17.2us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentLiabilitiesMember		 6.7us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherCurrentLiabilitiesMember		  
Non-current liabilities        
Product Warranty Liability [Line Items]        
Accrued Rent $ 26.9us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember		 $ 27.7us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember		 $ 12.7us-gaap_AccruedRentNoncurrent
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember