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CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCK EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Dividends per Common Share	$ 1.46	$ 1.44	$ 1.42
Common Stock, Shares issued	25,932		32,095
Dividend and Distribution Reinvestment and Share Purchase Plan
Common Stock, Shares issued		26,256
Registered Public Offering
Common Stock, Shares issued		690,000

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Aggregate dividends declared during the period for each share of common stock outstanding.

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