Annual report pursuant to Section 13 and 15(d)

Reconciliation of Weighted-Average Outstanding Shares Used in Calculations of Basic and Diluted EPS (Detail)

v2.4.0.6
Reconciliation of Weighted-Average Outstanding Shares Used in Calculations of Basic and Diluted EPS (Detail)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]      
Weighted-average shares outstanding (basic) 121.9 124.8 126.3
Effect of dilutive securities:      
Stock options and restricted stock units 1.8 1.7 1.6
Weighted-average shares outstanding (diluted) 123.7 126.5 127.9