CONSOLIDATED STATEMENTS OF EQUITY (PARENTHETICAL) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash dividends on Common Stock (USD per share)	$ 1.2	$ 0.8	$ 0.1
Common Stock
Common stock, par value (USD per share)	1	1	1
Class B Common Stock
Common stock, par value (USD per share)	$ 1	$ 1	$ 1