Derivative Financial Instruments and Hedging Activities Schedule of Fair Value by Balance Sheet Location (Details) - Not Designated as Hedging Instrument - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gross	$ 253.0	$ 114.9
Cash collateral	40.2	6.1
Derivative asset, fair value, gross, net of cash collateral	212.8	108.8
Gross Liabilities	334.8	103.8
Cash collateral	130.2	25.6
Derivative liabilities, fair value, gross, net of cash collateral	204.6	78.2
Foreign exchange contracts	136.3	72.1
Derivative assets, net	96.1	66.0
Foreign exchange derivative contracts	218.2	60.9
Derivative liabilities, net	$ 88.0	$ 35.3

Derivative Asset, Fair Value, Gross, Amount Offset Against Collateral

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