Correction of Previously Issued Financial Information - Consolidated Balance Sheets 2 (Details) - $ / shares shares in Millions		Jun. 30, 2016	Dec. 31, 2015
Correction of Previously Issued Financial Information
Preferred stock, par value (in dollars per share)	[1]	$ 1.00	$ 1.00
Preferred stock, shares authorized	[1]	0.1	0.1
Preferred stock, shares issued	[1]	0.0	0.0
Common stock, par value (in dollars per share)	[1]	$ 0.01	$ 0.01
Common stock, shares authorized	[1]	100.0	100.0
Common stock, shares issued	[1]	70.4	70.8
Common stock, shares outstanding	[1]	70.4	70.8

[1] Amounts may not add due to rounding