Property, Plant and Equipment (Details) - USD ($) $ in Millions	Jan. 31, 2016	Jan. 31, 2015
Property, Plant and Equipment [Abstract]
Land	$ 45.6	$ 42.7
Buildings	120.9	125.8
Leasehold And Building Improvements	1,102.8	1,036.4
Office Equipment	554.9	586.2
Furniture and Fixtures	265.3	261.1
Machinery and Equipment	169.2	155.2
Construction-in-Progress	95.7	59.8
Property, Plant and Equipment, Gross	2,354.4	2,267.2
Accumulated Depreciation and Amortization	(1,418.6)	(1,367.7)
Property, Plant and Equipment, Net	$ 935.8	$ 899.5