Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Deferred Tax Valuation Allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 223.9	$ 172.7	$ 89.4
Additions
Charged to Cost and Expenses	635.8	49.1	85.0
Charged to Other Accounts	0	2.1	9.3
Acquisition	0	0	0
Deductions	1.3	0	11.0
Balance at End of Year	858.4	223.9	172.7
Accounts Receivable Allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	0
Additions
Charged to Cost and Expenses	8.1
Charged to Other Accounts	0
Acquisition	0
Deductions	0
Balance at End of Year	$ 8.1