Income Taxes (Table 4) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Net operating loss and other carryforwards	$ 7,286.1	$ 1,985.3
Property and equipment, net	3,470.7	299.9
Debt	837.7	528.6
Derivative instruments	518.4	526.3
Intangible assets	187.5	109.0
Share-based compensation	84.6	38.4
Other future deductible amounts	180.4	135.9
Deferred tax assets	12,565.4	3,623.4
Valuation allowance	(7,052.8)	(2,184.4)
Deferred tax assets, net of valuation allowance	5,512.6	1,439.0
Deferred tax liabilities:
Property and equipment, net	(1,945.3)	(1,156.6)
Intangible assets	(1,471.1)	(618.3)
Investments	(400.7)	(445.2)
Derivative instruments	(129.5)	(218.5)
Other future taxable amounts	(253.8)	(217.4)
Deferred tax liabilities	(4,200.4)	(2,656.0)
Net deferred tax asset (liability)	$ 1,312.2	$ (1,217.0)