STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

STOCK-BASED COMPENSATION

Schedule of stock-based compensation expense and the related deferred tax benefit recognized in income

(Millions)	2013		2012
Stock options	$	0.1	$	0.2
Performance stock rights	0.8		0.5
Restricted share units	1.0		0.8
Total stock-based compensation expense	$	1.9	$	1.5
Deferred income tax benefit	$	0.8	$	0.6

Schedule of weighted-average fair values per stock option along with the assumptions incorporated into the valuation model

	February 2013 Grant
Weighted-average fair value per option	$6.03
Expected term	5 years
Risk-free interest rate	0.18% – 2.11%
Expected dividend yield	5.33%
Expected volatility	24%

Summary of stock option activity and information related to outstanding and exercisable stock options

	Stock Options		Weighted-Average  Exercise Price Per  Share		Weighted-Average  Remaining Contractual Life (in Years)	Aggregate  Intrinsic Value (Millions)
Outstanding at December 31, 2012	66,852		$	49.95
Granted	19,364		56.00
Exercised	(7,998	)	43.37
Outstanding at March 31, 2013	78,218		52.12		5.9	$	0.5
Exercisable at March 31, 2013	40,766		$	51.27	3.1	$	0.3

Disclosure of performance stock rights assumptions

	2013
Risk-free interest rate	0.17% – 1.27%
Expected dividend yield	5.18% – 5.34%
Expected volatility	19% – 36%

Summary of activity related to all restricted share unit awards (equity and liability awards)

	Restricted Share Unit Awards		Weighted-Average Grant Date Fair Value
Outstanding at December 31, 2012	67,954		$	48.26
Granted	22,555		56.00
Dividend equivalents	743		51.99
Vested and released	(28,079	)	46.20
Outstanding at March 31, 2013	63,173		$	51.99

Performance Stock Rights accounted for as Equity awards

Stock based compensation

Summary of the activity related to performance stock rights

	Performance Stock Rights		Weighted-Average Fair Value *
Outstanding at December 31, 2012	4,908		$	66.95
Granted	1,374		48.50
Distributed	(4,318	)	74.53
Adjustment for final payout	996		74.53
Outstanding at March 31, 2013	2,960		$	49.87

* Reflects the weighted-average fair value used to measure equity awards. Equity awards are measured using the grant date fair value or the fair value on the modification date.

Performance Stock Rights accounted for as Liability awards

Stock based compensation

Summary of the activity related to performance stock rights

	Performance Stock Rights
Outstanding at December 31, 2012	6,774
Granted	5,489
Distributed	(573	)
Adjustment for final payout	133
Outstanding at March 31, 2013	11,823