Other Charges - Operating Expenses (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed	96
Restructuring charge, total	$ 18.8
Restructuring charge, future lease obligation	$ 15.0		$ 15.0
Gain (Loss) on Disposition of Business		$ 0.6
Sourcing and distribution start-up costs		1.7
u.s. core [Member]
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed	167
Mexico Store Consolidation Plan [Member] | Mexico [Member]
Restructuring Cost and Reserve [Line Items]
Store Consolidation Plan - Number of Stores Closed			14	34
Restructuring charge, total		$ 2.8		$ 3.1