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Income Taxes (Tables) | 9 Months Ended
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Feb. 28, 2018
Income Tax Disclosure [Abstract] |
Summary of Reconciliation Tax Rates | The following table provides a reconciliation of the 2017 effective tax rates to the 2018 effective tax rates, including the impact of the TCJA, for the periods ended February 28:
|  | Three Months Ended |  |  | Nine Months Ended |
|  | 2018 |  |  | 2018 |
2017 Effective Tax Rate |  |  | 37.5 | % |  |  | 36.6 | %
Remeasurement of net U.S. deferred tax liability |  |  | (131.5 | ) |  |  | (38.4 | )
Effect of February 2018 pension contribution (a) |  |  | (23.3 | ) |  |  | (6.8 | )
Lower statutory tax rate |  |  | (18.9 | ) |  |  | (5.5 | )
Transition tax |  |  | (4.1 | ) |  |  | (1.2 | )
Other (b) |  |  | 3.0 |  |  |  | 0.3 |
2018 Effective Tax Rate |  |  | (137.3 | )% |  |  | (15.0 | )%
| (a) | The benefit is from the pension contribution deducted on our 2017 tax return at a tax rate of 35%.
| (b) | The 2018 tax rates were negatively impacted by the effect of the NotPetya cyberattack, changes in uncertain tax positions and tax rate impacts on changes in deferred tax items after the TCJA enactment and were favorably impacted from foreign tax credits associated with a second quarter dividend from foreign operations.

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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