CONSOLIDATED SHARE OWNERS' EQUITY (Parenthetical) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
CONSOLIDATED SHARE OWNERS' EQUITY
Issuance of common stock (in shares)	0.5	0.9	1.2
Reissuance of common stock (in shares)	0.3	0.2	0.2
Treasury shares purchased (in shares)		6.0