Earnings per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - shares	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014
Earnings per Share [Abstract]
Basic method	172,205,433	177,535,503		175,047,295	179,259,573
Dilutive stock options and restricted stock units	0	1,320,575	[1]	0	1,318,512	[1]
Diluted method	172,205,433	178,856,078		175,047,295	180,578,085

[1] Due to a net loss recognized by the Company for the three-month and nine-month periods ended September 30, 2015, no unvested stock awards were included in the computation of diluted earnings per share because the effect would have been anti-dilutive.