Equity (Common Stock Changes In Number of Shares Issued, Held In Treasury and Outstanding) (Details) - shares		3 Months Ended	6 Months Ended
		Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020
Class of Stock [Line Items]
Common Stock, Shares, Issued		85,310,598	85,310,598
Common Stock Issuable [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued			85,310,598	79,137,758
Issuance of common stock			0	6,172,840
Common stock acquired		0		0
Stock-based compensation (1)	[1]	0		0
Common Stock, Shares, Issued		85,310,598	85,310,598	85,310,598
Common Stock Held In Treasury [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued			17,353,697	16,481,656
Issuance of common stock			0	0
Common stock acquired		0		(1,074,413)
Stock-based compensation (1)	[1]	(40,036)		(181,330)
Common Stock, Shares, Issued		17,313,661	17,313,661	17,374,739
Common Stock Outstanding [Member]
Class of Stock [Line Items]
Common Stock, Shares, Issued			67,956,901	62,656,102
Issuance of common stock			0	6,172,840
Common stock acquired		0		(1,074,413)
Stock-based compensation (1)	[1]	(40,036)		(181,330)
Common Stock, Shares, Issued		67,996,937	67,996,937	67,935,859

[1] Represents net shares issued from treasury pursuant to the Company’s equity-based compensation programs.