The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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Income Taxes (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended							12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes
U.S. statutory rate (as a percent)								35.00%
Tax (expense) benefit at the U.S. statutory rate								$ (21.5)	$ (53.6)	$ (279.1)
Differences in taxes resulting from:
Change in valuation allowance								128.2	2.6	53.7
Non-U.S. earnings, net of foreign taxes								6.2	22.8	(1.2)
Tax reserve adjustments								4.3	(2.8)	8.8
Tax exempt interest and dividends								2.9	2.3	1.7
Tax rate change enacted in Luxembourg								1.2	2.8
Withholding tax								0.2	(0.2)	(0.7)
Purchase of subsidiaries									4.5
Sale of subsidiaries									4.3
Other, net								1.2	0.4	2.6
Total income tax benefit (expense)	124.6	0.6	(10.0)	7.7	(6.6)	(11.7)	1.4	122.7	(16.9)	(214.2)
Non-U.S. component of pre-tax income								65.4	74.4	221.0
Tax Payments and Receipts
Net income tax payments to (receipts from) national governments, total								$ 12.5	$ (47.0)	$ (17.5)