CAPITAL STOCK AND SHARE-BASED COMPENSATION (Narrative) (Details) $ / shares in Units, $ in Millions		3 Months Ended												12 Months Ended
	Dec. 15, 2014 USD ($) $ / shares	Dec. 31, 2015 $ / shares shares	Sep. 30, 2015 $ / shares	Jun. 30, 2015 $ / shares	Mar. 31, 2015 $ / shares	Jan. 01, 2015 $ / shares shares	Sep. 25, 2014 $ / shares	Jun. 26, 2014 $ / shares	Mar. 27, 2014 $ / shares	Dec. 26, 2013 $ / shares	Sep. 26, 2013 $ / shares	Jun. 27, 2013 $ / shares	Mar. 28, 2013 $ / shares	Dec. 31, 2015 USD ($) vote dividend series $ / shares shares	Jan. 01, 2015 USD ($) dividend $ / shares shares	Dec. 26, 2013 USD ($) dividend	May. 09, 2012 shares	May. 31, 2002 shares
Share-Based Compensation
Preferred stock, shares authorized (in shares) | shares		50,000,000				50,000,000								50,000,000	50,000,000
Preferred stock, par value (in dollars per share) | $ / shares		$ 0.001				$ 0.001								$ 0.001	$ 0.001
Number of Class A Common Stock that Class B Common Stock will convert into														1
Number of series of preferred stock issues authorized | series														1
Cash used to pay dividends														$ 139.1	$ 294.8	$ 132.2
Proceeds from stock option exercises (less than)														$ 0.0	$ 0.1	$ 1.3
Class A common stock
Share-Based Compensation
Common stock, shares authorized (in shares) | shares		500,000,000				500,000,000								500,000,000	500,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.001				$ 0.001								$ 0.001	$ 0.001
Shares issued (in shares) | shares		132,745,481				132,465,104								132,745,481	132,465,104			18,000,000
Number each holder of Class B common stock is entitled to (in votes per share) | vote														1
Number of quarterly cash dividends | dividend														4	4
Common Stock
Share-Based Compensation
Number of quarterly cash dividends | dividend																4
Cash dividends paid, quarterly (in dollars per share) | $ / shares		$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.22	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21	$ 0.21
Cash used to pay dividends														$ 139.1	$ 138.6	$ 132.2
Extraordinary dividends paid (in dollars per share) | $ / shares	$ 1.00
Extraordinary dividend paid	$ 156.2
Class B common stock
Share-Based Compensation
Common stock, shares authorized (in shares) | shares		200,000,000				200,000,000								200,000,000	200,000,000
Common stock, par value (in dollars per share) | $ / shares		$ 0.001				$ 0.001								$ 0.001	$ 0.001
Shares issued (in shares) | shares		23,708,639				23,708,639								23,708,639	23,708,639
Number each holder of Class B common stock is entitled to (in votes per share) | vote														10
Employee Stock Option
Share-Based Compensation
Excess tax benefits from share-based payment arrangements (less than)															$ 0.1	0.1
Proceeds from stock option exercises (less than)															0.1	1.3
Actual income tax benefit realized from exercise of stock options (less than)															0.1	0.2
Total intrinsic value of options exercised														$ 0.0	$ 0.1	$ 0.5
Incentive Plan | Class A common stock
Share-Based Compensation
Number of shares authorized under the awards (in shares) | shares																	5,000,000
Common stock available for future issuance under incentive plan (in shares) | shares		4,338,685												4,338,685