Acquisition Fair Value Recognized Assets and Liabilities Assumed (Details) - Kelway TopCo Limited [Member] $ in Millions	Aug. 01, 2015 USD ($)
Business Acquisition [Line Items]
Cash	$ 27.8
Accounts receivable	135.7
Merchandise inventory	20.4
Property and equipment, net	11.4
Identified intangible assets	289.8
Other assets	37.5
Total assets acquired	522.6
Accounts payable - trade	(86.1)
Deferred revenue	(49.2)
Other liabilities	(32.9)
Deferred tax liabilities	(57.0)
Debt	(111.5)
Total liabilities assumed	(336.7)
Total identifiable net assets	185.9
Goodwill	313.8
Total purchase price	$ 499.7