INCOME TAXES - Federal Tax Rate Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Reconciliation of federal income taxes at the applicable statutory rate to the recorded provision from continuing operations
Federal statutory rate (as a percent)	35.00%	35.00%	35.00%
State income taxes, net of federal tax benefit (as a percent)	0.20%	0.60%	(0.10%)
Non-deductible items (as a percent)	1.00%	1.20%	3.40%
Domestic production activities deduction (as a percent)	(3.40%)	(3.90%)	(3.20%)
Effect of consolidated VIEs (as a percent)	1.20%	1.40%	0.80%
Changes in unrecognized tax benefits (as a percent)	0.30%	(1.90%)	(3.40%)
Basis in stock subsidiaries (as a percent)	0.00%	(5.50%)	0.00%
Federal research and development credit (as a percent)	(0.40%)	(1.10%)	(0.00%)
Other (as a percent)	(0.60%)	(0.60%)	(1.00%)
Effective income tax rate (as a percent)	33.30%	25.20%	31.50%
Reductions related to expiration of the applicable statute of limitations	$ 1.0	$ 5.7	$ 10.8
Tax benefit realized, sale of stock of subsidiary		$ 12.6