Quarterly report pursuant to Section 13 or 15(d)

Stock Option Activity (Detail)

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Stock Option Activity (Detail) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
3 Months Ended
Sep. 30, 2012
Shares  
Beginning Balance 575
Granted 5
Exercised (2)
Ending Balance 578
Exercisable at September 30, 2012 405
Weighted Average Exercise Price  
Beginning Balance $ 65.78
Granted $ 74.05
Exercised $ 55.11
Ending Balance $ 65.90
Exercisable at September 30, 2012 $ 62.84
Weighted Average Contractual Life (Yrs.)  
Outstanding at September 30, 2012 5 years 6 months
Exercisable at September 30, 2012 5 years 6 months
Aggregate Intrinsic Value  
Outstanding at September 30, 2012 $ 4.1
Exercisable at September 30, 2012 $ 3.9