XML 12 R4.htm IDEA: XBRL DOCUMENT v2.3.0.15
Condensed Consolidated Balance Sheet Parenthetical (USD $)
In Millions, except Per Share data
Sep. 30, 2011
Dec. 31, 2010
Treasury Stock, Shares5.55.5
Common Stock, Par or Stated Value Per Share$ 0.01$ 0.01