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Summary of Activity in Restructuring Reserves (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
May 31, 2020 | May 31, 2019 | May 31, 2018
Restructuring Cost And Reserve [Line Items] |  |  |  |
Additions charged to expense |  | $ 33,108 | $ 42,310 | $ 17,514
2020 MAP to Growth |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning balance |  | 12,694 | 17,514 |
Additions charged to expense |  | 33,108 | 42,310 | 17,514
Cash payments charged against reserve |  | (26,277) | (34,238) |
Non-cash charges included above | [1] | (6,288) | (12,892) |
Ending balance |  | 13,237 | 12,694 | 17,514
2020 MAP to Growth | Severance and Benefit Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning balance |  | 4,837 | 9,957 |
Additions charged to expense |  | 19,747 | 32,519 | 9,957
Cash payments charged against reserve |  | (17,038) | (31,219) |
Non-cash charges included above | [1] | (189) | (6,420) |
Ending balance |  | 7,357 | 4,837 | 9,957
2020 MAP to Growth | Facility Closure and Other Related Costs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning balance |  | 7,857 | 6,184 |
Additions charged to expense |  | 8,548 | 8,195 | 6,184
Cash payments charged against reserve |  | (9,239) | (3,019) |
Non-cash charges included above | [1] | (1,286) | (3,503) |
Ending balance |  | 5,880 | 7,857 | 6,184
2020 MAP to Growth | Other Asset Write-offs |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Beginning balance |  |  | 1,373 |
Additions charged to expense |  | 4,813 | 1,596 | 1,373
Non-cash charges included above | [1] | $ (4,813) | $ (2,969) |
Ending balance |  |  |  | $ 1,373
[1] | Non-cash charges primarily include accelerated vesting of equity awards and asset-write offs.

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