Shares and Stockholders' Equity (Changes In Common stock (Number Of Shares)) (Details) - shares	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Changes In Common Stock (Number Of Shares) [Line Items]
Balance as of beginning-of-year	40,000
Balance as of beginning-of-year	169,220,511
Balance as of end-of-period	40,000
Balance as of end-of-year	169,537,759
Common Stock [Member]
Changes In Common Stock (Number Of Shares) [Line Items]
Balance as of beginning-of-year	169,220,511	177,193,515
Stock compensation/issued for benefit plans	317,248	514,855
Retirement/cancellation of shares		(5,817,396)
Balance as of end-of-year	169,537,759	171,890,974
Common stock as of End-of-Year
Basic basis	169,537,759	171,890,974
Diluted basis	170,474,027	173,761,296