Equity (Details 4) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total other comprehensive income (loss), Pretax	$ (66.3)		$ 57.7
Total other comprehensive income (loss), Net of Tax	(40.8)		33.9
Available-for-Sale Securities
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Other comprehensive income (loss), before Reclassifications, Pretax	(21.0)		130.0
Reclassification of (gains) losses into net earnings, Pretax	(45.9)	[1]	(68.5)	[1]
Total other comprehensive income (loss), Pretax	(66.9)		61.5
Other comprehensive income (loss), before Reclassifications, Net of Tax	(13.4)		79.7
Reclassification of (gains) losses into net earnings, Net of Tax	(28.0)	[1]	(41.8)	[1]
Total other comprehensive income (loss), Net of Tax	(41.4)		37.9
Cash Flow Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total other comprehensive income (loss), Pretax	0.2		0.7
Total other comprehensive income (loss), Net of Tax	0.2		0.4
Cumulative Translation Adjustments
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Total other comprehensive income (loss), Pretax	0.4		(4.5)
Total other comprehensive income (loss), Net of Tax	0.4		(4.4)
Foreign Currency Contracts | Cash Flow Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Reclassification of (gains) losses into net earnings, Pretax	0.2	[2]	0	[2]
Reclassification of (gains) losses into net earnings, Net of Tax	0.2	[2]	0	[2]
Interest Rate Contracts | Cash Flow Hedges
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Reclassification of (gains) losses into net earnings, Pretax	0	[3]	0.7	[3]
Reclassification of (gains) losses into net earnings, Net of Tax	$ 0	[3]	$ 0.4	[3]

[1] Realized (gains)/losses on available for sale securities are recognized in other income, net.

[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.