STOCK OPTIONS AND RESTRICTED STOCK (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Long-term incentive plan [Abstract]
Shares available for future option and restricted stock grants (in shares)	2.7	3.2
Compensation cost recorded for stock-based employee compensation awards	$ 19.7	$ 16.7	$ 22.0
Total tax benefit recognized for compensation cost	6.3	5.1	8.2
Total compensation cost related to unvested awards not yet recognized	17.4
Weighted-average period to amortize compensation cost not yet recognized (in months)	26 months
Cash received from option exercises			0.6
Stock Options [Member]
Options [Roll Forward]
Outstanding, beginning of period (in shares)	1.9	4.4	6.2
Exercised (in shares)	0	0	(0.1)
Cancelled (in shares)	0	(0.1)	(0.4)
Expired (in shares)	(1.9)	(2.4)	(1.3)
Outstanding, end of period (in shares)	0	1.9	4.4
Exercisable, end of period (in shares)	0	1.9	4.4
Weighted Average Exercise Price [Abstract]
Outstanding, beginning of period (in dollars per share)	$ 36.50	$ 34.74	$ 32.79
Exercised (in dollars per share)	$ 0	$ 0	$ 11.81
Cancelled (in dollars per share)	$ 0	$ 32.87	$ 32.30
Expired (in dollars per share)	$ 36.50	$ 33.43	$ 27.35
Outstanding, end of period (in dollars per share)	$ 0	$ 36.50	$ 34.74
Exercisable, end of period (in dollars per share)	$ 0	$ 36.50	$ 34.74
Weighted-average contractual term (in years) of: [Abstract]
Options outstanding at end of year (in years)	0 months 0 days	2 months 12 days	10 months 24 days
Options exercisable at end of year (in years)	0 months 0 days	2 months 12 days	10 months 24 days
Intrinsic value (in millions) of: [Abstract]
Options outstanding at end of year	0	0	0
Options exercisable at end of year	0	0	0
Options exercised during the year	0	0	0.4
Fair value (in millions) of options vested during the year	0	0	1.1
Stock Options [Member] | Non-Employee Directors [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
Shares [Roll Forward]
Nonvested, beginning of period (in shares)	5.0	4.7	3.6
Granted (in shares)	3.2	2.2	1.9
Vested (in shares)	(1.5)	(1.5)	(0.6)
Forfeited (in shares)	(0.8)	(0.4)	(0.2)
Nonvested, end of period (in shares)	5.9	5.0	4.7
Weighted Average Fair Value [Abstract]
Nonvested, beginning of period (in dollars per share)	$ 9.91	$ 10.79	$ 10.33
Granted (in dollars per share)	$ 7.69	$ 9.82	$ 15.23
Vested (in dollars per share)	$ 7.19	$ 11.58	$ 20.48
Forfeited (in dollars per share)	$ 6.87	$ 13.58	$ 12.73
Nonvested, end of period (in dollars per share)	$ 9.80	$ 9.91	$ 10.79
Fair value (in millions) of shares vested during the year	$ 10.9	$ 17.4	$ 13.8