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Employee Benefit Plans (Details) - Schedule for measurement of benefit plan assets at fair value - Pension Plans [Member] - USD ($) $ in Millions	May 31, 2020	May 31, 2019	May 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 36.6	$ 31.8
Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.8	0.9
Equity securities, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.7	1.1
Equity securities, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.8	10.0
Pooled, Common and Collective Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.5	12.0
Annuities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.6	5.5
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.2	2.3
U.K. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	36.6	31.8	$ 30.8
U.K. [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	13.5	14.3
U.K. [Member] | Level 1 [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.8	0.9
U.K. [Member] | Level 1 [Member] | Equity securities, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	3.7	1.1
U.K. [Member] | Level 1 [Member] | Equity securities, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6.8	10.0
U.K. [Member] | Level 1 [Member] | Pooled, Common and Collective Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 1 [Member] | Annuities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 1 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	2.2	2.3
U.K. [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.5	12.0
U.K. [Member] | Level 2 [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 2 [Member] | Equity securities, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 2 [Member] | Equity securities, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 2 [Member] | Pooled, Common and Collective Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	17.5	12.0
U.K. [Member] | Level 2 [Member] | Annuities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 2 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.6	5.5
U.K. [Member] | Level 3 [Member] | Cash and cash equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 3 [Member] | Equity securities, U.S. [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 3 [Member] | Equity securities, International [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 3 [Member] | Pooled, Common and Collective Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0.0	0.0
U.K. [Member] | Level 3 [Member] | Annuities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	5.6	5.5
U.K. [Member] | Level 3 [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0.0	$ 0.0

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- Definition

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+ References

No definition available.

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- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

+ References

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