Summary of Significant Accounting Policies Intangibles (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 84.8	$ 95.6
Finite-Lived Intangible Assets, Accumulated Amortization	(15.0)	(21.1)
Product Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	49.6	59.4
Finite-Lived Intangible Assets, Accumulated Amortization	$ (9.2)	(16.2)
Key Money Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	39 years
Finite-Lived Intangible Assets, Gross	$ 32.7	33.7
Finite-Lived Intangible Assets, Accumulated Amortization	(3.3)	(2.4)
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2.5	2.5
Finite-Lived Intangible Assets, Accumulated Amortization	$ (2.5)	$ (2.5)
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years