(LOSS) EARNINGS PER SHARE (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Oct. 05, 2013	Jul. 06, 2013	Apr. 06, 2013	Dec. 31, 2012	Sep. 29, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
(LOSS) EARNINGS PER SHARE [Abstract]
Net (loss) income	$ (47.1)	$ 29.7	$ (3.2)	$ 0.9	$ (80.1)	$ 17.8	$ 8.4	$ (1.0)	$ (19.7)	$ (55.0)	$ 51.5
Less: income attributable to noncontrolling interests									0.1	1.1	0.8
(Loss) income attributable to Jones									(19.8)	(56.1)	50.7
Less: (loss) income allocated to participating securities									(0.7)	(1.8)	1.5
(Loss) income available to common stockholders of Jones									$ (19.1)	$ (54.3)	$ 49.2
Weighted-average common shares outstanding - basic									73.0	74.9	79.6
Effect of dilutive employee stock options and restricted stock											1.7
Weighted-average common shares and share equivalents outstanding - diluted									73.0	74.9	81.3
(Loss) earnings per share [Abstract]
Basic (in dollars per share)	$ (0.61)	$ 0.39	$ (0.05)	$ 0.01	$ (1.06)	$ 0.23	$ 0.11	$ (0.01)	$ (0.26)	$ (0.72)	$ 0.62
Diluted (in dollars per share)	$ (0.61)	$ 0.38	$ (0.05)	$ 0.01	$ (1.06)	$ 0.22	$ 0.10	$ (0.01)	$ (0.26)	$ (0.72)	$ 0.61