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Taxes (Tables)
12 Months Ended
May 31, 2023
Income Tax And Non Income Tax Disclosure [Abstract]  
Schedule of income from continuing operations
The components of Earnings (loss) before income taxes for the fiscal years ended May 31 were:
202320222021
United States$106.3 $76.9 $(45.8)
Non-United States6.1 12.8 27.6 
Total$112.4 $89.7 $(18.2)
Schedule of income tax expense (benefit)
The provision (benefit) for income taxes for the fiscal years ended May 31 consisted of the following components: 
 202320222021
Current   
Federal$26.4 $(2.1)$2.3 
State and local1.6 0.6 (0.3)
Non-United States1.6 3.0 6.0 
Total Current$29.6 $1.5 $8.0 
Deferred   
Federal$(6.6)$6.1 $(10.9)
State and local3.9 2.4 (1.3)
Non-United States(1.0)(1.3)(3.1)
Total Deferred$(3.7)$7.2 $(15.3)
 Total Current and Deferred$25.9 $8.7 $(7.3)
Schedule of effective income tax rate reconciliation
A reconciliation of the significant differences between the effective income tax rate and the federal statutory rate on Earnings (loss) before income taxes for the fiscal years ended May 31 was as follows:
 202320222021
Computed federal statutory provision21.0 %21.0 %21.0 %
State income tax provision, net of federal income tax benefit4.6 3.1 (10.4)
Difference in effective tax rates on earnings of foreign subsidiaries0.0 (0.2)7.0 
Rate differential on net operating loss carrybacks— — 19.3 
GILTI inclusion0.4 — (2.7)
Foreign derived intangible income deduction(1.7)— — 
Various tax credits(1.5)(1.9)6.5 
Valuation allowances— 0.2 25.7 
Uncertain positions(0.8)(8.1)(14.6)
Equity and other compensation2.9 1.2 (8.7)
Return to provision adjustments(1.3)(4.4)— 
Other, net(0.6)(1.2)(3.0)
Effective tax rates23.0 %9.7 %40.1 %
Total provision (benefit) for income taxes$25.9 $8.7 $(7.3)
Schedule of deferred tax assets and liabilities
The significant components for deferred income taxes for the fiscal years ended May 31 were as follows: 

20232022
Deferred tax assets:  
Tax uniform capitalization$18.0 $9.8 
Prepublication expenses1.4 0.6 
Inventory reserves20.7 21.3 
Allowance for credit losses2.2 4.0 
Deferred revenue3.8 2.5 
Stock based compensation4.5 8.0 
Other reserves5.9 8.4 
Postretirement, post employment and pension obligations2.2 2.3 
Tax carryforwards25.2 35.2 
Lease liabilities24.2 22.8 
Other13.6 15.7 
Gross deferred tax assets$121.7 $130.6 
Valuation allowance(18.1)(23.1)
Total deferred tax assets$103.6 $107.5 
Deferred tax liabilities:  
Depreciation and amortization(45.2)(66.4)
Lease right-of-use assets(21.8)(20.7)
Research and development costs capitalized(12.1)— 
Other(3.5)(2.5)
Total deferred tax liability$(82.6)$(89.6)
Total net deferred tax assets$21.0 $17.9 
Schedule of unrecognized tax benefits rollforward
The table below presents a reconciliation of the unrecognized tax benefits for the fiscal years indicated: 
Gross unrecognized benefits at May 31, 2020$10.2 
Decreases related to prior year tax positions(0.2)
Increase related to prior year tax positions2.6 
Increases related to current year tax positions0.2 
Settlements during the period(0.2)
Lapse of statute of limitation(0.3)
Gross unrecognized benefits at May 31, 2021$12.3 
Decreases related to prior year tax positions(6.8)
Increase related to prior year tax positions0.5 
Increases related to current year tax positions0.6 
Settlements during the period(3.5)
Lapse of statute of limitation— 
Gross unrecognized benefits at May 31, 2022$3.1 
Decreases related to prior year tax positions(1.7)
Increase related to prior year tax positions0.1 
Increases related to current year tax positions0.5 
Settlements during the period— 
Lapse of statute of limitation— 
Gross unrecognized benefits at May 31, 2023$2.0