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Valuation and Qualifying Accounts | 12 Months Ended
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May 31, 2011
Valuation and Qualifying Accounts [Abstract] |
Valuation and Qualifying Accounts | Valuation and Qualifying Accounts PAYCHEX, INC. CONSOLIDATED FINANCIAL STATEMENT SCHEDULE FOR THE YEAR ENDED MAY 31, In millions
|  | Balance as of |  | Additions |  | Additions to |  |  |  | Balance as
|  | beginning |  | charged to |  | other |  | Costs and |  | of end
Description |  | of year |  | expenses |  | accounts(1) |  | deductions(2) |  | of year
2011 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1.9 |  |  | $ | 1.8 |  |  | $ | 0.4 |  |  | $ | 2.0 |  |  | $ | 2.1 |
Reserve for client fund losses |  | $ | 2.6 |  |  | $ | 1.9 |  |  | $ | — |  |  | $ | 2.7 |  |  | $ | 1.8 |
2010 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 4.0 |  |  | $ | 2.6 |  |  | $ | — |  |  | $ | 4.7 |  |  | $ | 1.9 |
Reserve for client fund losses |  | $ | 3.2 |  |  | $ | 3.5 |  |  | $ | — |  |  | $ | 4.1 |  |  | $ | 2.6 |
2009 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 4.1 |  |  | $ | 2.9 |  |  | $ | — |  |  | $ | 3.0 |  |  | $ | 4.0 |
Reserve for client fund losses |  | $ | 2.9 |  |  | $ | 4.4 |  |  | $ | — |  |  | $ | 4.1 |  |  | $ | 3.2 |
(1) |  | Acquired in purchase transactions.
(2) |  | Uncollectible amounts written off, net of recoveries. For fiscal 2010, this column includes the amount disposed of with the divestiture of Stromberg, an immaterial component of the Company.

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- Definition Valuation and qualifying accounts. + Details
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- Definition An element designated to encapsulate the entire schedule of any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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Namespace Prefix: | us-gaap
Data Type: | us-types:textBlockItemType
Balance Type: | na
Period Type: | duration