Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common Treasury Shares	40,501,644	41,391,555	42,494,684	45,243,329
Cash dividends declared per common share (in dollars per share)	$ 0	$ 0	$ 0