Shares and Stockholders' Equity (Changes In Common stock (Number Of Shares)) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Changes In Common Stock (Number Of Shares) [Line Items]
Balance as of beginning-of-year			177,193,515
Balance as of end-of-year	169,214,493		169,214,493
Common stock as of End-of-Year
Basic basis	169,214,493	186,089,222	169,214,493	186,089,222
Diluted basis	170,658,861	188,103,623	170,658,861	188,103,623
Common Stock [Member]
Changes In Common Stock (Number Of Shares) [Line Items]
Balance as of beginning-of-year	170,224,116	189,089,948	177,193,515	192,329,691
Stock compensation/issued for benefit plans	10,052	61,099	686,473	943,925
Retirement/cancellation of shares	(1,019,675)	(3,061,825)	(8,665,495)	(7,184,394)
Balance as of end-of-year	169,214,493	186,089,222	169,214,493	186,089,222