Equity (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Additions to and reclassifications out of Accumulated other comprehensive income
Total other comprehensive income (loss), Pretax	$ (20.0)		$ (27.3)		$ (98.3)		$ 70.9
Total other comprehensive income (loss), Net of Tax	(14.7)		(14.0)				44.3
Available-for-Sale Securities
Additions to and reclassifications out of Accumulated other comprehensive income
Other comprehensive income (loss), before Reclassifications, Pretax	34.2		13.8		1.2		200.1
Reclassification of (gains) losses into net earnings, Pretax	(48.9)	[1]	(49.6)	[1]	(96.8)	[1]	(133.5)	[1]
Total other comprehensive income (loss), Pretax	(14.7)		(35.8)		(95.6)		66.6
Other comprehensive income (loss), before Reclassifications, Net of Tax	20.3		8.0		(0.4)		122.2
Reclassification of (gains) losses into net earnings, Net of Tax	(29.8)	[1]	(30.3)	[1]	(59.0)	[1]	(81.5)	[1]
Total other comprehensive income (loss), Net of Tax	(9.5)		(22.3)		(59.4)		40.7
Cash Flow Hedges
Additions to and reclassifications out of Accumulated other comprehensive income
Other comprehensive income (loss), before Reclassifications, Pretax	(0.2)		(0.1)		0.1		(0.8)
Total other comprehensive income (loss), Pretax	0		0.6		0.5		1.9
Other comprehensive income (loss), before Reclassifications, Net of Tax	(0.1)		0		0.1		(0.5)
Total other comprehensive income (loss), Net of Tax	0		0.5		0.4		1.2
Cumulative Translation Adjustments
Additions to and reclassifications out of Accumulated other comprehensive income
Total other comprehensive income (loss), Pretax	(5.3)		7.9		(3.2)		2.4
Total other comprehensive income (loss), Net of Tax	(5.2)		7.8		(3.1)		2.4
Foreign Currency Contracts | Cash Flow Hedges
Additions to and reclassifications out of Accumulated other comprehensive income
Reclassification of (gains) losses into net earnings, Pretax	0.2	[2]	0.2	[2]	0.4	[2]	0.2	[2]
Reclassification of (gains) losses into net earnings, Net of Tax	0.1	[2]	0.2	[2]	0.3	[2]	0.2	[2]
Interest Rate Contracts | Cash Flow Hedges
Additions to and reclassifications out of Accumulated other comprehensive income
Reclassification of (gains) losses into net earnings, Pretax	0	[3]	0.5	[3]	0	[3]	2.5	[3]
Reclassification of (gains) losses into net earnings, Net of Tax	$ 0	[3]	$ 0.3	[3]	$ 0	[3]	$ 1.5	[3]

[1] Realized (gains)/losses on available-for-sale securities are recognized in Other income, net on the Company’s Condensed Consolidated Statement of Income.

[2] Reclassification to net earnings of derivatives qualifying as effective foreign currency cash flow hedges are recognized in Costs and expenses

[3] Reclassification to net earnings of derivatives qualifying as effective interest rate cash flow hedges are recognized in Interest expense on the Company’s Condensed Consolidated Statement of Income.