Equity Offering (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2017
Class of Stock [Line Items]
Issuance of common stock, net		$ 381.1
Common Stock
Class of Stock [Line Items]
Shares issued through public equity offering (in shares)	18,170,000