Valuation and Qualifying Accounts (Rollforward) (Tables) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 13.6		$ 15.1		$ 18.7
Charges	9.7		6.2		3.2
Deductions	(7.9)		(7.7)		(6.8)
Balance at end of period	15.4		13.6		15.1
Allowance for Doubtful Accounts, Continuing Operations [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	7.6		8.3		10.2
Charges	6.9	[1]	2.0	[1]	2.7	[1]
Deductions	(3.3)	[2]	(2.7)	[2]	(4.6)	[2]
Balance at end of period	11.2		7.6		8.3
Inventory Valuation Reserve [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	2.2		0.4		0.1
Charges	2.3	[3]	3.1	[3]	0.3	[3]
Deductions	(2.5)	[4]	(1.3)	[4]	0
Balance at end of period	2.0		2.2		0.4
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	1.0		0.8		3.0
Charges	0		0.7	[5]	0
Deductions	(0.8)	[6]	(0.5)	[7]	(2.2)	[8]
Balance at end of period	0.2		1.0		0.8
Valuation Allowance, Operating Loss Carryforwards [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	2.8		5.6		5.4
Charges	0.5	[9]	0.4	[9]	0.2	[9]
Deductions	(1.3)	[10]	(3.2)	[10]	0
Balance at end of period	$ 2.0		$ 2.8		$ 5.6

[1] Provision for doubtful accounts.

[2] Write-offs and reversals of uncollectible accounts.

[3] Provision for inventory obsolescence

[4] Inventory write-offs

[5] Unrealized losses and reductions to unrealized gains recorded in other comprehensive income.

[6] The increase in unrealized gains recorded in other comprehensive income.

[7] Represents reversal of unrealized losses upon redemption of security.

[8] Represents credit and other losses recognized in earnings, net of reversal of unrealized losses upon sale of securities and unrealized gains recognized in other comprehensive income.

[9] Increase in the foreign tax loss carryforward.

[10] Decrease in valuation allowance for deferred tax assets is due primarily to the utilization of tax loss carryforwards and other tax benefits.