CONDENSED STATEMENTS OF CONSOLIDATED CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Class of Stock [Line Items]
Cumulative preferred stock par value (in dollars per share)	$ 0.01		$ 0.01
Cumulative preferred stock shares authorized (in shares)	20,000,000		20,000,000
Common stock shares par value (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	1,000,000,000	1,000,000,000	1,000,000,000	1,000,000,000	1,000,000,000
Common Stock dividends declared ($0.2875, $0.2775, $0.2875 and $0.2775 per share, respectively)	$ 0.2875	$ 0.2775	$ 0.2875	$ 0.2775
Series A Preferred Stock [Member]
Class of Stock [Line Items]
Cumulative preferred stock par value (in dollars per share)	0.01		0.01		$ 0.01
Series B Preferred Stock dividends declared ($17.5000, $-0-, $17.5000, and $-0- per share, respectively)	0.0000	0.0000	0.0000	0.0000
Series B Preferred Stock [Member]
Class of Stock [Line Items]
Cumulative preferred stock par value (in dollars per share)	0.01		0.01		$ 0.01
Series B Preferred Stock dividends declared ($17.5000, $-0-, $17.5000, and $-0- per share, respectively)	$ 17.5000	$ 0.0000	$ 17.5000	$ 0.0000