Derivative Instruments - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivatives, Notional Amount [Line Items]
Notional amount of derivatives	$ 1,825,000,000.0		$ 1,825,000,000.0		$ 946,900,000
Designated derivatives:
Derivatives, Notional Amount [Line Items]
Notional amount of derivatives	1,661,700,000		1,661,700,000		784,000,000.0
Cash flow hedges:
Derivatives, Notional Amount [Line Items]
Derivative instruments, gain (loss) recognized in other comprehensive income (loss), effective portion	35,300,000	$ (12,400,000)	$ 24,100,000	$ (11,100,000)
Cash flow hedges: | Designated derivatives:
Derivatives, Notional Amount [Line Items]
Maximum maturities of cash flow hedge derivatives			36 months
Losses expected to be reclassified into earnings within the next 12 months			$ 10,200,000
Interest rate lock contracts | Cash flow hedges: | Designated derivatives:
Derivatives, Notional Amount [Line Items]
Notional amount of derivatives	650,000,000.0		$ 650,000,000.0		0
Swaps designated as cash flow hedges, expected termination period			5 years
Interest rate swap contracts | Fair value hedges: | Designated derivatives:
Derivatives, Notional Amount [Line Items]
Notional amount of derivatives	300,000,000.0		$ 300,000,000.0		300,000,000.0
Foreign exchange contracts
Derivatives, Notional Amount [Line Items]
Foreign currency forward contracts, amounts reclassified out of AOCI	(1,400,000)	$ (800,000)	(9,800,000)	$ (1,500,000)
Foreign exchange contracts | Cash flow hedges: | Designated derivatives:
Derivatives, Notional Amount [Line Items]
Notional amount of derivatives	$ 711,700,000		$ 711,700,000		$ 484,000,000.0
Minimum | Foreign exchange contracts
Derivatives, Notional Amount [Line Items]
Maturity of foreign currency derivatives			1 month
Maximum | Foreign exchange contracts
Derivatives, Notional Amount [Line Items]
Maturity of foreign currency derivatives			4 months
Maximum | Interest rate swap contracts
Derivatives, Notional Amount [Line Items]
Derivative expiration period			9 years