Consolidated Balance Sheets (Parenthetical) - $ / shares		Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)		$ 1	$ 1
Preferred stock, shares authorized (in shares)		100,000	100,000
Preferred stock, shares issued (in shares)		0	0
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)		100,000,000	100,000,000
Common stock, shares issued (in shares)	[1]	70,400,000	70,800,000
Common stock, shares outstanding (in shares)	[1]	70,400,000	70,800,000

[1] Amounts may not add due to rounding