Fair Value Disclosure (Details) $ in Millions		3 Months Ended	12 Months Ended
		Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) Instrument	Dec. 31, 2015 USD ($) Instrument	Dec. 31, 2014 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months			$ (3.7)
Derivative, Net Liability Position, Aggregate Fair Value			0.0
Derivative Asset, Notional Amount			550.0	$ 550.0
Disposal Group, Including Discontinued Operation, Other Assets, Noncurrent			89.5	106.0
Asset Impairment Charges			38.5	33.9	$ 1.3
Liabilities
Derivative, Notional Amount			412.1	442.9
Cash Flow Hedge Pre Tax Gain Loss to be Reclassified within Twelve Months			(5.9)
Fair Value, Measurements, Recurring [Member]
Assets
Available for sale equity securities				3.3
Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	[1]		2.9	1.8
Foreign Currency Cash Flow Hedge Asset at Fair Value	[2]		12.2	10.2
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	[2]			0.8
Liabilities
Interest rate derivatives	[1]		0.1	1.2
Foreign exchange rate derivatives	[2]			(0.2)
Fair Value, Measurements, Recurring [Member] | Not Designated as Hedging Instrument [Member]
Assets
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	[2]		1.3
Liabilities
Foreign exchange rate derivatives	[2]			(2.4)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Assets
Available for sale equity securities				3.3
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Designated as Hedging Instrument [Member]
Assets
Interest rate derivatives	[1]		2.9	1.8
Foreign Currency Cash Flow Hedge Asset at Fair Value	[2]		12.2
Foreign Currency Derivative Instruments Not Designated as Hedging Instruments, Asset at Fair Value	[2]			0.8
Liabilities
Interest rate derivatives	[1]		$ 0.1	1.2
Foreign exchange rate derivatives	[2]			$ (0.2)
Cash Flow Hedging [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, Number of Instruments Held | Instrument			9	10
Other Nonoperating Income (Expense) [Member] | Cash Flow Hedging [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Effective portion reclassified from accumulated other comprehensive loss			$ (11.9)	$ (6.9)	(2.1)
Other Expense [Member] | Not Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net			(2.6)	(6.1)	(11.4)
Other Expense [Member] | Aae Cargo Ag [Member] | Not Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net				5.1	10.4
Cardinal Marine [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent		50.00%
Asset Impairment Charges		$ 19.0		19.0
Portfolio Management [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges			$ 6.7	31.0	$ (0.1)
Portfolio Management [Member] | Cardinal Marine [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges				19.0
Nordic Vessels [Member] | Changes Measurement [Member] | Portfolio Management [Member] | Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Impairment Charges				$ 30.8

[1] (1) Designated as hedges

[2] (2) Not designated as hedges