SHARE-BASED AWARDS (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based compensation disclosures
Common stock available for future issuance (in shares)	6,200,000
Stock options
Share-based compensation disclosures
Options granted, weighted average grant-date fair value (in dollars per share)	$ 10.74	$ 8.92	$ 6.59
Weighted average valuation assumptions
Expected volatility (as a percent)	31.80%	29.20%	28.80%
Expected term	6 years 1 month 6 days	6 years	5 years 9 months 18 days
Risk-free interest rate (as a percent)	1.20%	2.30%	2.70%
Dividend yield (as a percent)	2.70%	3.10%	3.80%
Options cancelled in connection with separation (in shares)	2,900,000
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	2,096,000
Granted (in shares)	111,000
Exercised (in shares)	(687,000)
Forfeited and expired (in shares)	(167,000)
Outstanding, end of period (in shares)	1,353,000	2,096,000
Exercisable (in shares)	911,000
Weighted average exercise price
Outstanding, weighted average exercise price, beginning of period (in dollars per share)	$ 20.11
Granted, weighted average exercise price (in dollars per share)	$ 23.74
Exercised, weighted average exercise price (in dollars per share)	$ 17.57
Forfeited and expired, weighted average exercise price (in dollars per share)	$ 24.62
Outstanding, weighted average exercise price, end of period (in dollars per share)	$ 21.15	$ 20.11
Exercisable, weighted average exercise price (in dollars per share)	$ 21.40
Outstanding, weighted average contractual life	5 years 7 months 6 days
Exercisable, weighted average contractual life	4 years 6 months
Outstanding, aggregate intrinsic value	$ 4,794
Exercisable, aggregate intrinsic value	$ 3,071
2007 Plan
Share-based compensation disclosures
Common stock initially available for future issuance (in shares)	2,215,000
Common stock available for future issuance (in shares)	6,200,000
Additional shares of authorized for issuance	2,200,000
Number of separate incentive compensation programs	4
Number of share based compensation plans within the entity's incentive compensation programs	3
2007 Plan | Discretionary Grant Program
Share-based compensation disclosures
Exercisable period	3 years
2007 Plan | Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	1,329,000
Granted (in shares)	111,000
Exercised (in shares)	(448,000)
Forfeited and expired (in shares)	(38,000)
Outstanding, end of period (in shares)	954,000
Exercisable (in shares)	512,000
2007 Plan | Stock options | Discretionary Grant Program
Share-based compensation disclosures
Minimum exercise price as a percentage of fair market value of common stock	100.00%
Expiration Term	10 years
2007 Plan | Performance-Based Restricted Stock Units | Stock Issuance Program
Share-based compensation disclosures
Vesting period of awards granted	3 years
2007 Plan | Time-Based Restricted Stock Units | Stock Issuance Program
Share-based compensation disclosures
Vesting period of awards granted	3 years
2007 Plan | Restricted Stock Units
Share-based compensation disclosures
Options granted, weighted average grant-date fair value (in dollars per share)	$ 17.46
2007 Plan | Restricted Stock Units | Automatic Grant Program
Share-based compensation disclosures
Vesting period of awards granted	3 years
1998 Plan | Stock options
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	572,000
Exercised (in shares)	(190,000)
Forfeited and expired (in shares)	(129,000)
Outstanding, end of period (in shares)	253,000
Exercisable (in shares)	253,000
Predecessor Plans 1998 Plan | Stock options
Share-based compensation disclosures
Vesting period of awards granted	3 years
Expiration Term	10 years
Period of time within for an option to be exercised for eligibility for reload feature and new stock option grant	5 years
Ratio to convert original option price under reload feature	1.5
Predecessor Plans 1998 Plan | Performance-Based Restricted Stock Units
Share-based compensation disclosures
Vesting period of awards granted	1 year
Predecessor Plans 1998 Plan | Time-Based Restricted Stock Units
Share-based compensation disclosures
Vesting period of awards granted	3 years
Predecessor Plan 1998 Directors' Plan | Stock options
Share-based compensation disclosures
Exercisable period	3 years
Number of shares that can be purchased with the annual option (in shares)	8,000
Activity in the entity's stock option plans
Outstanding, beginning of period (in shares)	195,000
Exercised (in shares)	(49,000)
Outstanding, end of period (in shares)	146,000
Exercisable (in shares)	146,000