Earnings Per Share (Weighted-Average Shares Outstanding for Computation of Basic and Diluted Income per Common Share) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Basic method (in shares)	154,439,313	153,596,109	154,239,440	153,479,654
Dilutive stock options and restricted stock units (in shares)	1,492,949	0	0	0
Diluted method (in shares)	155,932,262	153,596,109	154,239,440	153,479,654
Unvested stock awards	$ 0	$ 0	$ 0	$ 0