CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares			3 Months Ended		6 Months Ended
	May 09, 2018	Feb. 05, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Stockholders' Equity [Abstract]
Common dividends (in dollars per share)	$ 0.45	$ 0.45	$ 0.45	$ 0.43	$ 0.90	$ 0.85