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Debt, Derivatives and Hedging Activities - Summary of Debt Outstanding (Details) - USD ($) | Aug. 31, 2017 | May 31, 2017
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Long-term Debt and Capital Lease Obligations, Current [Abstract] |  |
Debt issuance costs | $ (50,000) | $ (100,000)
Total debt due within one year | 307,450,000 | 362,900,000
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Debt issuance costs | (21,334,000) | (22,075,000)
Total debt due after one year | 2,533,672,000 | 2,770,624,000
Senior notes | Senior Notes, 6.13%, 2018 Maturity |  |
Long-term Debt and Capital Lease Obligations, Current [Abstract] |  |
Long-term Debt, current | $ 300,000,000 | 300,000,000
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Stated interest rate (as a percent) | 6.13% |
Senior notes | Senior Notes 4.30%, 2022 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 250,000,000 | 250,000,000
Stated interest rate (as a percent) | 4.30% |
Senior notes | Senior Notes, 2.90%, 2022 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 650,000,000 | 650,000,000
Stated interest rate (as a percent) | 2.90% |
Senior notes | Senior Notes, 3.25%, 2023 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 300,000,000 | 300,000,000
Stated interest rate (as a percent) | 3.25% |
Senior notes | Senior Notes, 2.78%, 2023 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 52,446,000 | 52,554,000
Stated interest rate (as a percent) | 2.78% |
Senior notes | Senior Notes, 2.78%, 2023 Maturity | G&K Services |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Face value |  | $ 50,000,000.0
Stated interest rate (as a percent) |  | 3.73%
Senior notes | Senior Notes, 3.11%, 2025 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 52,560,000 | $ 52,645,000
Stated interest rate (as a percent) | 3.11% |
Senior notes | Senior Notes, 3.11%, 2025 Maturity | G&K Services |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Face value |  | $ 50,000,000.0
Stated interest rate (as a percent) |  | 3.88%
Senior notes | Senior Notes, 3.70%, 2027 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 1,000,000,000 | $ 1,000,000,000
Stated interest rate (as a percent) | 3.70% |
Senior notes | Senior Notes, 6.15%, 2037 Maturity |  |
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 250,000,000 | 250,000,000
Stated interest rate (as a percent) | 6.15% |
Commercial paper | Commercial Paper, 1.24% |  |
Long-term Debt and Capital Lease Obligations, Current [Abstract] |  |
Long-term Debt, current | $ 7,500,000 | 50,500,000
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Effective interest rate (as a percent) | 1.40% |
Line of Credit | Term Loan Facility |  |
Long-term Debt and Capital Lease Obligations, Current [Abstract] |  |
Long-term Debt, current | $ 0 | 12,500,000
Long-term Debt and Capital Lease Obligations [Abstract] |  |
Long-term Debt, non-current | $ 0 | $ 237,500,000
Effective interest rate (as a percent) | 2.00% |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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