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Debt, Derivatives and Hedging Activities - Summary of Debt Outstanding (Details) - USD ($) | Nov. 30, 2018 | May 31, 2018 | May 31, 2017
--- | --- | --- | ---
Debt due within one year |  |  |
Debt due within one year | $ 173,500,000 | $ 0 |
Debt due after one year |  |  |
Debt issuance costs | (17,634,000) | (19,119,000) |
Total debt due after one year | 2,536,408,000 | 2,535,309,000 |
Commercial paper | Commercial paper 2.60% |  |  |
Debt due within one year |  |  |
Debt due within one year | $ 173,500,000 | 0 |
Debt due after one year |  |  |
Variable borrowing rate | 2.60% |  |
Senior notes | Senior Notes 4.30%, 2022 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 250,000,000 | 250,000,000 |
Stated interest rate | 4.30% |  |
Senior notes | Senior Notes, 2.90%, 2022 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 650,000,000 | 650,000,000 |
Stated interest rate | 2.90% |  |
Senior notes | Senior Notes, 3.25%, 2023 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 300,000,000 | 300,000,000 |
Stated interest rate | 3.25% |  |
Senior notes | Senior Notes, 2.78%, 2023 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 51,902,000 | 52,119,000 |
Stated interest rate | 2.78% |  |
Senior notes | Senior Notes, 2.78%, 2023 Maturity | G&K Services |  |  |
Debt due after one year |  |  |
Stated interest rate |  |  | 3.73%
Face value |  |  | $ 50,000,000.0
Senior notes | Senior Notes, 3.11%, 2025 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 52,140,000 | 52,309,000 |
Stated interest rate | 3.11% |  |
Senior notes | Senior Notes, 3.11%, 2025 Maturity | G&K Services |  |  |
Debt due after one year |  |  |
Stated interest rate |  |  | 3.88%
Face value |  |  | $ 50,000,000.0
Senior notes | Senior Notes, 3.70%, 2027 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 1,000,000,000 | 1,000,000,000 |
Stated interest rate | 3.70% |  |
Senior notes | Senior Notes, 6.15%, 2037 Maturity |  |  |
Debt due after one year |  |  |
Long-term Debt, non-current | $ 250,000,000 | $ 250,000,000 |
Stated interest rate | 6.15% |  |

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