Subsequent Events (Details) - USD ($) shares in Millions, $ in Millions	1 Months Ended	9 Months Ended
	Oct. 31, 2016	Sep. 30, 2016
Subsequent Event [Line Items]
Investment shares sold		4.0
Gain on Sale of Investments		$ 6.4
Sale of Stock, Percentage of Ownership after Transaction		4.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Investment shares sold	24.0
Gain on Sale of Investments	$ 42.0
Sale of Stock, Percentage of Ownership after Transaction	2.00%