Capital Stock (Schedule of Common Stock Shares Purchased and Retired) (Details) - shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Capital Stock [Abstract]
Shares of common stock purchased	1,016,132	735,641	794,227
Shares of common stock retired	1,010,521	725,186	798,166