STOCK OPTIONS AND RESTRICTED STOCK (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Long-term incentive plan [Abstract]
Shares available for future option and restricted stock grants	4.1	2.7
Compensation cost recorded for stock-based employee compensation awards	$ 23.3	$ 19.7	$ 16.7
Total tax benefit recognized for compensation cost	7.1	6.3	5.1
Total compensation cost related to unvested awards not yet recognized	21.1
Weighted-average period to amortize compensation cost not yet recognized (in months)	23 months
Options [Roll Forward]
Outstanding, beginning of period (in shares)		1.9	4.4
Cancelled (in shares)			(0.1)
Expired (in shares)		(1.9)	(2.4)
Outstanding, end of period (in shares)			1.9
Exercisable, end of period (in shares)			1.9
Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period (in dollars per share)		$ 36.50	$ 34.74
Cancelled (in dollars per share)			$ 32.87
Expired (in dollars per share)		$ 36.50	$ 33.43
Outstanding, end of period (in dollars per share)			$ 36.50
Exercisable, end of period (in dollars per share)			$ 36.50
Weighted-average contractual term (in years) of: [Abstract]
Options outstanding at end of year (in years)			0 years 2 months 12 days
Options exercisable at end of year (in years)			0 years 2 months 12 days
Intrinsic value (in millions) of: [Abstract]
Options outstanding at end of year			0
Options exercisable at end of year			0
Options exercised during the year			0
Fair value (in millions) of options vested during the year			0
Time Based Vesting [Member]
Shares [Roll Forward]
Nonvested, beginning of period (in shares)	2.2	1.9	2.0
Granted (in shares)	1.1	1.2	0.9
Vested (in shares)	(0.5)	(0.7)	(0.8)
Forfeited (in shares)	(0.2)	(0.2)	(0.2)
Nonvested, end of period (in shares)	2.6	2.2	1.9
Weighted Average Fair Value [Abstract]
Nonvested, beginning of period (in dollars per share)	$ 11.64	$ 11.66	$ 10.24
Granted (in dollars per share)	$ 12.49	$ 9.76	$ 12.56
Vested (in dollars per share)	$ 13.86	$ 8.24	$ 9.27
Forfeited (in dollars per share)	$ 11.86	$ 12.43	$ 11.34
Nonvested, end of period (in dollars per share)	$ 11.85	$ 11.64	$ 11.66
Fair value (in millions) of shares vested during the year	7.4	5.7	7.7
Performance Based Vesting [Member]
Shares [Roll Forward]
Nonvested, beginning of period (in shares)	1.8	1.5	1.3
Granted (in shares)	0.8	1.0	0.6
Vested (in shares)	(0.4)	(0.6)	(0.3)
Forfeited (in shares)	(0.1)	(0.1)	(0.1)
Nonvested, end of period (in shares)	2.1	1.8	1.5
Weighted Average Fair Value [Abstract]
Nonvested, beginning of period (in dollars per share)	$ 11.48	$ 10.79	$ 11.21
Granted (in dollars per share)	$ 12.00	$ 9.34	$ 12.61
Vested (in dollars per share)	$ 14.90	$ 6.19	$ 14.46
Forfeited (in dollars per share)	$ 10.78	$ 10.30	$ 15.28
Nonvested, end of period (in dollars per share)	$ 11.22	$ 11.48	$ 10.79
Fair value (in millions) of shares vested during the year	5.9	3.6	4.8
Performance Based Vesting [Member] | 100% or Better [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	100.00%
Performance Based Vesting [Member] | 90% [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	75.00%
Performance Based Vesting [Member] | 80% [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	50.00%
Performance Based Vesting [Member] | Below 80% [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	0.00%
Market Condition Based Vesting [Member]
Shares [Roll Forward]
Nonvested, beginning of period (in shares)	1.8	1.5	1.3
Granted (in shares)	0.8	1.0	0.6
Vested (in shares)		(0.2)	(0.3)
Forfeited (in shares)	(0.5)	(0.5)	(0.1)
Nonvested, end of period (in shares)	2.1	1.8	1.5
Weighted Average Fair Value [Abstract]
Nonvested, beginning of period (in dollars per share)	$ 5.94	$ 6.80	$ 11.21
Granted (in dollars per share)	$ 7.25	$ 3.66	$ 3.15
Vested (in dollars per share)		$ 6.60	$ 14.46
Forfeited (in dollars per share)	$ 12.56	$ 3.33	$ 15.28
Nonvested, end of period (in dollars per share)	$ 4.87	$ 5.94	$ 6.80
Fair value (in millions) of shares vested during the year	$ 0	$ 1.6	$ 4.8
Market Condition Based Vesting [Member] | Median or Better [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	100.00%
Market Condition Based Vesting [Member] | 40th Percentile [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	75.00%
Market Condition Based Vesting [Member] | 30th Percentile [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	50.00%
Market Condition Based Vesting [Member] | Below 30th Percentile [Member]
Unvested Restricted Stock Vesting Rights [Abstract]
Unvested restricted stock vesting rights (in hundredths)	0.00%
Stock Options [Member]
Stock Options [Abstract]
Expiry Period	7 years
Stock Options [Member] | Director [Member]
Stock Options [Abstract]
Vesting period	6 months
Stock Options [Member] | Minimum [Member]
Stock Options [Abstract]
Vesting period	3 years
Stock Options [Member] | Maximum [Member]
Stock Options [Abstract]
Vesting period	5 years
Restricted Stock [Member]
Stock Options [Abstract]
Vesting period	3 years