Paychex, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans (Details 1)

Stock-Based Compensation Plans (Details 1) (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	May 31, 2012
April 2004 Grants [Member]
Broad-based stock option grants
Options Granted	1.7
Options granted, Weighted-average exercise price per share	$ 37.72
Options outstanding, Ending balance, Shares	0.7
Vesting schedule	25% each April in 2005 through 2008
October 2006 Grants [Member]
Broad-based stock option grants
Options Granted	2.0
Options granted, Weighted-average exercise price per share	$ 37.32
Options outstanding, Ending balance, Shares	1.1
Vesting schedule	20% each October in 2007 through 2011

- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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