CONSOLIDATED STATEMENTS OF CHANGES IN COMMON STOCK EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Dividends per Common Share	$ 1.42	$ 1.40	$ 1.38
Common stock, shares issued	32,095	36,265	38,020