Stockholders' Equity Capital Stock Shares Authorized, Issued and Outstanding (Details) - shares	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Common Stock, Shares Authorized	400,000,000	400,000,000
Common Stock, Shares Issued	123,352,185	123,352,185
Common Stock, Shares Outstanding	91,047,107	96,115,669
$25 Par Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	840,000	840,000
Preferred Stock, Shares Issued	649,736	649,736
Preferred Stock, Shares Outstanding	215,199	222,625
$1 Par Preferred Stock [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Shares Issued	0	0