Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Short-term Return on Assets

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- Definition

Defined Benefit Plan, Average Remaining Life Expectancy

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- Definition

Other Comprehensive Income Defined Benefit Plans Tax Expense Benefit

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- Definition

Percentage of federal subsidy to sponsors of retiree health care benefit plans.

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

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- Definition

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

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- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

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- Definition

Amount of decrease in accumulated postretirement benefit obligation for government subsidy related to prescription drug benefits attributed to past service.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement.

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

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Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Amount, after tax, before reclassification adjustment, of (increase) decrease in accumulated other comprehensive income of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Employee Benefit Plans (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
Employee Benefit Plans (Details) - USD ($) $ in Millions	Nov. 30, 2018	Nov. 30, 2018	May 31, 2020	May 31, 2019	May 31, 2018
Employee Benefit Plans (Details) [Line Items]
Settlement charge					$ (57.3)
Percentage of federal subsidy to sponsors of retiree health care benefit plans			28.00%
Cumulative reduction of its accumulated post-retirement benefit obligation	$ 2.7		$ 1.2	$ 1.5	2.3
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax		$ 2.7
Defined benefit plans tax expense recognized in AOCI			0.4	(0.5)	(20.9)
Estimated employer contributions in 2015			1.0
Contribution to retirement plan			$ 6.7	7.6	7.2
Defined Benefit Plan, Prescription Drug Benefit, Net Periodic Postretirement Benefit Cost, Remaining Life			13 years
Annuities [Member] \| Level 3 [Member]
Employee Benefit Plans (Details) [Line Items]
Fair value of annuities			$ 5.6	5.5
Pension Plans [Member]
Employee Benefit Plans (Details) [Line Items]
Estimated net loss to be recognized over next twelve months			0.5
Other Postretirement Benefits [Member]
Employee Benefit Plans (Details) [Line Items]
Settlement charge			$ 0.0	$ 0.0	$ 0.0
Expected long-term return on plan assets			0.00%	0.00%	0.00%
Expected short-term return on plan assets			0.00%	0.00%	0.00%
U.S. [Member] \| Pension Plans [Member]
Employee Benefit Plans (Details) [Line Items]
Settlement charge					$ (57.3)
Expected long-term return on plan assets					0.00%
Expected short-term return on plan assets					4.80%
U.K. [Member] \| Pension Plans [Member]
Employee Benefit Plans (Details) [Line Items]
Settlement charge			$ 0.0	$ 0.0	$ 0.0
Expected long-term return on plan assets			3.10%	3.40%	3.40%
Expected short-term return on plan assets			0.00%	0.00%	0.00%