Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended				6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		$ (26,900,000)		$ (28,400,000)	$ (26,900,000)	$ (28,400,000)
Other comprehensive income (loss) before reclassification					(53,000,000)	(13,300,000)
Other, (net of tax of 2013: $0 and 2012: $0)	100,000		200,000		100,000	100,000
Amounts reclassified from accumulated other comprehensive loss	(4,000,000)		(2,000,000)		(6,600,000)	(3,700,000)
Net current period other comprehensive income (loss)	(22,200,000)		(42,000,000)	(9,600,000)	(46,400,000)	(9,600,000)
Balance at March 31, 2013	(73,300,000)		(38,000,000)		(73,300,000)	(38,000,000)
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Tax provision	95,800,000	95,800,000	70,700,000		155,300,000	94,900,000
Translation adjustment changes	(26,700,000)		(46,100,000)		(54,000,000)	(16,500,000)
Net of tax	(4,000,000)		(2,000,000)		(6,600,000)	(3,700,000)
Pension and Other Post-Employment Benefits
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		(109,800,000)		(99,600,000)	(109,800,000)	(99,600,000)
Other comprehensive income (loss) before reclassification					300,000	0
Amounts reclassified from accumulated other comprehensive loss	(2,500,000)		(2,000,000)		(5,100,000)	(3,700,000)
Net current period other comprehensive income (loss)					5,400,000	3,700,000
Balance at March 31, 2013	(104,400,000)		(95,900,000)		(104,400,000)	(95,900,000)
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Tax provision	1,500,000		1,200,000		3,200,000	2,300,000
Translation adjustment changes	1,500,000		0		1,500,000	0
Net of tax	(2,500,000)		(2,000,000)		(5,100,000)	(3,700,000)
Pension and Other Post-Employment Benefits | Selling, General and Administrative Expenses
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Amortization of actuarial losses	4,000,000		3,200,000		8,300,000	6,000,000
Foreign Currency Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		102,700,000		91,300,000	102,700,000	91,300,000
Other comprehensive income (loss) before reclassification					(55,500,000)	(16,500,000)
Amounts reclassified from accumulated other comprehensive loss					(1,500,000)	0
Net current period other comprehensive income (loss)						(16,500,000)
Balance at March 31, 2013	48,700,000		74,800,000		48,700,000	74,800,000
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Net of tax					(1,500,000)	0
Unrealized Losses on Terminated Net Investment Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		(19,400,000)		(19,400,000)	(19,400,000)	(19,400,000)
Other comprehensive income (loss) before reclassification					0	0
Amounts reclassified from accumulated other comprehensive loss					0	0
Net current period other comprehensive income (loss)					0	0
Balance at March 31, 2013	(19,400,000)		(19,400,000)		(19,400,000)	(19,400,000)
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Net of tax					0	0
Unrealized Gains on Available for Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		0		300,000	0	300,000
Other comprehensive income (loss) before reclassification					2,100,000	3,100,000
Amounts reclassified from accumulated other comprehensive loss					0	0
Net current period other comprehensive income (loss)					2,100,000	3,100,000
Balance at March 31, 2013	2,100,000		3,400,000		2,100,000	3,400,000
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Net of tax					0	0
Other
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at January 1, 2013		(400,000)		(1,000,000)	(400,000)	(1,000,000)
Other comprehensive income (loss) before reclassification					100,000
Amounts reclassified from accumulated other comprehensive loss					0	0
Net current period other comprehensive income (loss)					100,000	100,000
Balance at March 31, 2013	(300,000)		(900,000)		(300,000)	(900,000)
Accumulated Other Comprehensive Income (Loss), by Component [Abstract]
Net of tax					$ 0	$ 0