Income Taxes (Table 2) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Computed “expected” tax benefit	$ 221.7	$ 121.1	$ 178.1
Change in valuation allowances:
Decrease	(373.1)	(112.6)	(148.3)
Increase	11.9	31.7	25.6
International rate differences:
Increase	266.4	148.2	60.6
Decrease	(27.6)	(50.8)	(81.8)
Non-deductible or non-taxable interest and other expenses:
Decrease	(236.5)	(133.5)	(84.7)
Increase	58.0	85.2	2.4
Tax effect of intercompany financing	166.9	82.7	0
Basis and other differences in the treatment of items associated with investments in subsidiaries and affiliates	(135.4)	(4.0)	(24.6)
Non-deductible or non-taxable foreign currency exchange results:
Increase	71.9	0.5	0
Decrease	(16.3)	(56.1)	(10.4)
Recognition of previously unrecognized tax benefits	29.5	0	0
Enacted tax law and rate changes	23.9	(377.8)	12.3
Change in subsidiary tax attributes due to a deemed change in control	0	(88.0)	0
Other, net	13.7	(2.1)	(4.2)
Total income tax benefit (expense)	$ 75.0us-gaap_IncomeTaxExpenseBenefit	$ (355.5)us-gaap_IncomeTaxExpenseBenefit	$ (75.0)us-gaap_IncomeTaxExpenseBenefit

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