Derivative Financial Instruments and Hedging - Summary of Notional Amounts and Fair Value (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Gross notional amount	$ 3,182.0	$ 1,697.0
Total	0.0	(1.0)
Other current assets
Derivative [Line Items]
Derivative asset fair value	3.2	1.3
Other current liabilities
Derivative [Line Items]
Liabilities at fair value	(3.2)	(2.3)
Designated
Derivative [Line Items]
Gross notional amount	2,574.0	863.0
Total	3.2	(2.3)
Designated | Other current assets
Derivative [Line Items]
Derivative asset fair value	3.2	0.0
Designated | Other current liabilities
Derivative [Line Items]
Liabilities at fair value	0.0	(2.3)
Non-Designated
Derivative [Line Items]
Gross notional amount	608.0	834.0
Total	(3.2)	1.3
Non-Designated | Other current assets
Derivative [Line Items]
Derivative asset fair value	0.0	1.3
Non-Designated | Other current liabilities
Derivative [Line Items]
Liabilities at fair value	$ (3.2)	$ 0.0