Equity - Schedule of the Company's Equity Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Equity [Line Items]
Beginning Balance	$ 111.1	$ 623.5
Net earnings	9.3	13.4
Transfers to parent company, net		43.9
Other comprehensive income	0.5	2.8
Separation-related adjustments	3.1
Share-based compensation	1.1
Issuance of share-based awards, net of withholdings and other	(0.6)
Ending Balance	124.5	683.6
Net Parent Company Investment
Equity [Line Items]
Beginning Balance		639.5
Net earnings		13.4
Transfers to parent company, net		43.9
Other comprehensive income		0.0
Ending Balance		696.8
Accumulated Other Comprehensive Loss
Equity [Line Items]
Beginning Balance	(68.3)	(16.0)
Net earnings		0.0
Transfers to parent company, net		0.0
Other comprehensive income		2.8
Ending Balance	$ (67.8)	$ (13.2)