SHARE-BASED COMPENSATION - Stock Appreciation Rights Activity (Details) (Stock appreciation rights, USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 years
Stock appreciation rights
Rights
Balance, beginning of year	1,989,000
Granted	53,000
Exercised	(91,000)
Forfeited or expired	(373,000)
Balance, end of year	1,578,000
Exercisable, end of year	1,218,000
Weighted Average Exercise Price
Balance, beginning of year	$ 22.74
Granted	$ 24.16
Exercised	$ 23.92
Forfeited or expired	$ 25.53
Balance, end of year	$ 22.80
Exercisable, end of year	$ 24.80
Average Remaining Contractual Term
Balance, end of year	5.09
Exercisable, end of year	4.36
Aggregate Intrinsic Value
Balance, end of year	$ 0
Exercisable, end of year	$ 0