Fair Value Disclosure (Details) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 150.0	$ 100.0
Assets
Available for sale equity securities	4.8	3.3
Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	7.4	10.2	[1]
Liabilities
Interest rate derivatives	0.2	1.0	[1]
Not Designated as Hedging Instrument [Member]
Liabilities
Interest rate derivatives	0.2	0.3	[2]
Foreign exchange rate derivatives	1.4	2.1	[2]
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Available for sale equity securities	4.8	3.3
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	0	0	[1]
Liabilities
Interest rate derivatives	0	0	[1]
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]
Liabilities
Interest rate derivatives	0	0	[2]
Foreign exchange rate derivatives	0	0	[2]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Available for sale equity securities	0	0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	7.4	10.2	[1]
Liabilities
Interest rate derivatives	0.2	1.0	[1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]
Liabilities
Interest rate derivatives	0.2	0.3	[2]
Foreign exchange rate derivatives	1.4	2.1	[2]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Available for sale equity securities	0	0
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	0	0	[1]
Liabilities
Interest rate derivatives	0	0	[1]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]
Liabilities
Interest rate derivatives	0	0	[2]
Foreign exchange rate derivatives	$ 0	$ 0	[2]

[1] Designated as hedges

[2] Not designated as hedges