STOCK (Tables)

9 Months Ended

Sep. 30, 2012

Equity [Abstract]

Schedule of changes in common shares and treasury stock

(In millions)	Common Shares Issued	Treasury Stock	Cost of Treasury Stock
Balance as of January 1, 2012	205.1	1.4	$	89.7
Stock-based compensation	0.9	0.2	15.0
Treasury stock purchases	—	1.2	93.3
Balance as of September 30, 2012	206.0	2.8	$	198.0
Balance as of January 1, 2011	204.8	0.1	$	3.2
Stock-based compensation	0.1	—	—
Treasury stock purchases	—	1.2	81.6
Balance as of September 30, 2011	204.9	1.3	$	84.8