Common Stock Issued and Outstanding - Activity in the Number of Common Stock Issued and Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning of year (in shares)	153,598,625	152,935,361	173,058,829
Stock options exercised (in shares)	32,554	11,359	12,345
Restricted stock awards (in shares)	831,871	651,905	561,729
Treasury shares purchased (in shares)	0	0	(20,697,542)
End of year (in shares)	154,463,050	153,598,625	152,935,361