Taxation (Unrecognized Tax Benefits) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits
Balance at January 1,	$ 278.7	[1]	$ 265.5	[1]	$ 290.8
Increases based on tax positions related to the current year	56.8		20.5		18.2
Decreases based on tax positions taken in the current year	(0.5)		0		(2.5)
Increases for tax positions taken in prior years	34.5		0.4		1.4
Decreases for tax positions taken in prior years	(0.8)		(3.3)		(12.0)
Decreases resulting from settlements with the taxing authorities	0		(10.6)		(25.7)
Decreases as a result of expiration of the statute of limitations	(0.6)		(0.3)		(0.5)
Foreign currency translation adjustments	(12.9)	[2]	6.5	[2]	(4.2)	[2]
Balance at December 31,	355.2	[1]	278.7	[1]	265.5	[1]
Income tax penalties and interest expense	0.4		5.1		4.0
Income tax penalties and interest expense accrued	112.2		119.6		114.5
Future increase or decrease in the unrecognized tax benefit.	$ 210

[1] The full amount of which would affect the effective rate if recognized

[2] Recognized within Other Comprehensive Income