Debt Narrative (details) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) days
Debt Instrument [Line Items]
debt weighted average balance | $	$ 178.0
Weighted Average Discount Rate, Percent	1.68%
Minimum [Member]
Debt Instrument [Line Items]
commercial paper days outstanding | days	1
Maximum [Member]
Debt Instrument [Line Items]
commercial paper days outstanding | days	18
Commercial Paper [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt | $	$ 1,100.0