Consolidated Statements of Equity (Parenthetical) - $ / shares		3 Months Ended	12 Months Ended
	Dec. 13, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Stockholders' Equity [Abstract]
Dividends declared per common share	$ 1.90	$ 0.375	$ 3.375	$ 1.4	$ 1.40