Acquisition and Strategic Transaction Details - Transaction Expenses - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Business Combinations [Abstract]
Strategic Transaction Costs		$ 1.1
Strategic transaction expenses	$ 12.4		$ 33.5	$ 1.1