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Borrowings - Additional Information (Detail) (USD $) | 1 Months Ended |  |  |  |  | 1 Months Ended | 12 Months Ended |  | 12 Months Ended |  |  | 1 Months Ended |  | 12 Months Ended
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Jun. 29, 2012 | May 31, 2013 | May 31, 2012 | Jun. 29, 2012 Swingline Loans | Oct. 23, 2012 3.45% Notes due 2022 | Oct. 23, 2012 Revolving Credit Facility | Oct. 09, 2009 Unsecured 6.125% senior note due October 15, 2019 | May 31, 2013 Unsecured 6.125% senior note due October 15, 2019 | May 31, 2012 Unsecured 6.125% senior note due October 15, 2019 | May 27, 2011 Unsecured 6.125% senior note due October 15, 2019 | May 31, 2011 Accounts Receivable Securitization Facility | Oct. 09, 2009 Accounts Receivable Securitization Facility | May 31, 2011 Accounts Receivable Securitization Facility Maximum | May 31, 2011 Accounts Receivable Securitization Facility Minimum | May 27, 2011 General Purpose Enhancements | Jun. 29, 2012 Issuance of Debt Maximum | Jun. 29, 2012 Issuance of Debt Minimum | May 31, 2013 Revolving Credit Facilities | May 31, 2012 Revolving Credit Facilities | May 31, 2013 Unsecured 6.70% senior notes due November 1, 2015 | May 31, 2012 Unsecured 6.70% senior notes due November 1, 2015 | May 31, 2013 Unsecured 6.25% senior notes due December 15, 2013 | May 31, 2012 Unsecured 6.25% senior notes due December 15, 2013
Debt Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt in 2014 |  | $ 204,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt in 2015 |  | 1,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt in 2016 |  | 150,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt in 2017 |  | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt in 2018 |  | 256,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maturities of long-term debt thereafter |  | 760,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility borrowing capacity |  | 742,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 592,000,000 |  |  |  |  |  |  |  |  |
Liquidity available |  | 1,100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated indebtedness |  | 53.40% | 48.50% |  |  |  |  |  |  |  |  |  | 60.00% |  |  |  |  | 60.00% |  |  |  |  |  |  |  |  |  |  |
Debt |  | 1,373,697,000 | 1,115,536,000 |  | 300,000,000 |  | 300,000,000 | 459,457,000 | [1] | 460,688,000 | [1] | 150,000,000 |  |  |  |  |  |  |  | 7,701,000 | [2] | 48,797,000 | [2] | 150,000,000 | [3] | 150,000,000 | [3] | 200,000,000 | 200,000,000
Debt, interest rate |  |  |  |  | 3.45% |  | 6.125% | 6.125% | [1] | 6.125% | [1] |  |  |  |  |  |  |  |  |  |  |  |  | 6.70% | [3] | 6.70% | [3] | 6.25% | 6.25%
Debt, due date |  |  |  |  |  |  | Oct. 15, 2019 | Oct. 15, 2019 | [1] | Oct. 15, 2019 | [1] |  |  |  |  |  |  |  |  | Jun. 29, 2017 | [2] | Jun. 29, 2017 | [2] | Nov. 01, 2015 | [3] | Nov. 01, 2015 | [3] | Dec. 15, 2013 | Dec. 15, 2013
Credit facility maturity period |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |
Credit facility borrowing capacity | 600,000,000 |  |  | 50,000,000 |  | 600,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000,000 | [2] | 600,000,000 | [2] |  |  |  |  |  |
Debt, maturity year |  |  |  |  | 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from the offering of notes |  |  |  |  | 297,700,000 |  | 163,700,000 |  |  |  |  |  |  | 120,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured senior note offering price |  |  |  |  |  |  |  |  |  |  |  | 108.09% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument yield to maturity |  |  |  |  |  |  |  |  |  |  |  | 4.934% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds used for general corporate purposes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 162,100,000 |  |  |  |  |  |  |  |  |  |  |  |
Credit facility expiration date | Jun. 29, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility maturity period | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit facility borrowing potential maximum capacity | $ 800,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest coverage ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.50 | 5.37 |  |  |  |  |  |  |  |  |
Leverage ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 53.50% |  |  |  |  |  |  |  |  |
Margin rate over LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.25% | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt rating |  |  |  |  |  |  |  |  |  |  |  |  | This margin will increase to 1.25% if we do not maintain our public debt rating of at least BB+/Ba1/BB+ from any two of Standard & Poor's, Moody's or Fitch. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum required consolidated interest coverage ratio for EBITDA to interest |  |  |  |  |  |  |  |  |  |  |  |  | 3.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective euro fixed-rate borrowing |  | 5.31% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.31% |  |  |  |  |
[1] | Includes the combination of the October 2009 initial issuance of $300.0 million aggregate principal amount and the May 2011 issuance of an additional $150.0 million aggregate principal amount of these notes. The $300.0 million aggregate principal amount of the notes due 2019 from the initial issuance is adjusted for the amortization of the original issue discount, which approximated $0.2 million at May 31, 2013 and 2012. The original issue discount effectively reduced the ultimate proceeds from the October 2009 financing. The effective interest rate on the notes issued in October 2009, including the amortization of the discount, is 6.139%. The additional $150.0 million aggregate principal amount of the notes due 2019 issued in May 2011 is adjusted for the unamortized premium received at issuance, which approximated $9.7 million and $11.0 million at May 31, 2013 and 2012, respectively. The premium effectively increased the proceeds from the financing. The effective interest rate on the $150.0 million notes issued in May 2011 is 4.934%.
[2] | Interest was tied to AUD LIBOR at May 31, 2013, and averaged 4.16% for AUD denominated debt. Interest was tied to euro LIBOR and prime rate at May 31, 2012, and averaged 1.99% and 5.65%, respectively, for euro denominated debt.
[3] | We entered into a cross-currency swap, which fixed the interest and principal payments in euros, resulting in an effective fixed-rate borrowing of 5.31%.

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- Definition The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3255-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_ProceedsFromIssuanceOfLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration