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STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based compensation expense was as follows:



	Years ended December 31,
	2012		2011			2010
	($ in millions)
Stock-based compensation	$	8.4	$	8.8		$	10.1
Mark-to-market adjustments	0.9		(0.5		)	1.2
Total expense	$	9.3	$	8.3		$	11.3

Stock Options Activity

Stock option transactions were as follows:



						Exercisable
	Shares		Option Price	Weighted Average Option Price		Options	Weighted Average Exercise Price
Outstanding at January 1, 2012	3,764,870		$14.28-23.78	$	17.84	2,415,347	$	18.46
Granted	480,250		21.92	21.92
Exercised	(80,781	)	14.28-18.78	16.23
Canceled	(103,549	)	14.28-18.78	16.39
Outstanding at December 31, 2012	4,060,790		$14.28-23.78	$	18.39	2,961,434	$	18.00

Stock Options Exercisable, Exercise Price Range

The following table provides certain information with respect to stock options exercisable at December 31, 2012:



Range of Exercise Prices	Options Exercisable	Weighted Average Exercise Price		Options Outstanding	Weighted Average Exercise Price
Under $16.00	1,140,983	$	14.89	1,388,803	$	15.03
$16.00 – $20.00	661,259	$	17.57	1,032,545	$	18.00
Over $20.00	1,159,192	$	21.30	1,639,442	$	21.48
	2,961,434			4,060,790

Common shares reserved and available for grant or purchase

At December 31, 2012, common shares reserved for issuance and available for grant or purchase under the following plans consisted of:



	Number of Shares
Stock Option Plans	Reserved for Issuance	Available for Grant or Purchase⁽¹⁾
2000 long term incentive plan	605,298	86,113
2003 long term incentive plan	876,315	22,009
2006 long term incentive plan	2,251,463	171,983
2009 long term incentive plan	2,993,664	1,631,916
	6,726,740	1,912,021
1996 stock option plan (plan expired)	66,536	—
Total under stock option plans	6,793,276	1,912,021



	Number of Shares
Stock Purchase Plans	Reserved for Issuance	Available for Grant or Purchase
1997 stock plan for non-employee directors	596,922	220,712
Employee deferral plan	46,340	45,644
Total under stock purchase plans	643,262	266,356

Performance Shares Transactions

Performance share transactions were as follows:



	To Settle in Cash				To Settle in Shares
	Shares		Weighted Average Fair Value per Share		Shares		Weighted Average Fair Value per Share
Outstanding at January 1, 2012	267,736		$	19.78	254,125		$	15.83
Granted	79,569		22.60		81,625		24.11
Paid/Issued	(101,722	)	19.78		(93,500	)	14.28
Canceled	(416	)	19.78		—		—
Outstanding at December 31, 2012	245,167		$	21.45	242,250		$	19.22
Total vested at December 31, 2012	153,417		$	21.45	150,500		$	18.03

Summary of Unvested Performance Shares

The summary of the status of our unvested performance shares to be settled in cash were as follows:



	Shares		Weighted Average Fair Value per Share
Unvested at January 1, 2012	67,500		$	19.78
Granted	79,569		22.60
Vested	(55,319	)	21.45
Unvested at December 31, 2012	91,750		$	21.45

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

+ References+ Details

- Definition

Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

+ References+ Details