Equity Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Equity [Abstract]
Sale of Stock, Number of Shares Issued in Transaction (in shares)	691,855	677,318	1,120,916	793,152
Proceeds from sale of common stock	$ 39.0	$ 31.1	$ 61.6	$ 37.1
Payments for commissions	$ 0.4	$ 0.3	$ 0.6	$ 0.4