SCHEDULE II VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015	Dec. 31, 2014
Allowance for sales returns and doubtful accounts [Roll Forward]
Reserves related to notes receivable and tax refund receivables		$ 5.6
Allowance for Doubtful Accounts [Member]
Allowance for sales returns and doubtful accounts [Roll Forward]
Balance at Beginning of Period		9.8		$ 6.5	$ 5.8
Charged to Expenses		4.6		7.9	8.9
Write-offs		(3.1)		(4.8)	(8.3)
Other		0.0		0.2	0.1
Balance at End of Period		11.3	[1]	9.8	6.5
Allowance for Sales Returns [Member]
Allowance for sales returns and doubtful accounts [Roll Forward]
Balance at Beginning of Period		5.9		9.3	10.9
Charged to Expenses		2.4		5.9	9.3
Write-offs		0.0		0.0	0.0
Other	[2]	(5.9)		(9.3)	(10.9)
Balance at End of Period		2.4		5.9	9.3
Allowance for Inventory Returns [Member]
Allowance for sales returns and doubtful accounts [Roll Forward]
Balance at Beginning of Period		(4.9)		(7.8)	(9.2)
Charged to Expenses		(1.6)		(4.9)	(7.8)
Write-offs		0.0		0.0	0.0
Other	[2]	4.9		7.8	9.2
Balance at End of Period		(1.6)		(4.9)	(7.8)
Allowance for Deferred Tax Assets, Noncurrent [Member]
Allowance for sales returns and doubtful accounts [Roll Forward]
Balance at Beginning of Period		80.6		48.8	39.7
Charged to Expenses		9.4		35.8	9.1
Write-offs		(1.9)		0.0	0.0
Other		1.6		(4.0)	0.0
Balance at End of Period		$ 89.7		$ 80.6	$ 48.8

[1] Excludes approximately $5.6 million of reserves related to notes receivable and tax refund receivables.

[2] Amounts represent gross revenue and cost reversals to the estimated sales returns and allowances accounts.