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Income Taxes (Tables)
 3 Months Ended
Jul. 31, 2018
Income Taxes [Abstract]  
Effective Income Tax Rate
The following table summarizes the effective tax rate for the three months ended July 31, 2018 and 2017:

  
Three Months Ended
July 31,
 
  
2018
  
2017
 
Effective tax rate as reported
  
22.8
%
  
(51.5
)%
Impact of restructuring and impairment charges
  
(0.1
)%
  
69.6
%
Effective tax rate excluding the impact of restructuring and impairment charges
  
22.7
%
  
18.1
%

The effective tax rate in the first quarter of fiscal year 2019 was 22.8%, compared to a benefit of 51.5% in the first quarter of fiscal year 2018. Fiscal year 2018 benefitted from significant restructuring and impairment charges in relatively high tax rate jurisdictions. Excluding these items, the effective tax rate for the first quarter of fiscal year 2018 was 18.1%. The increase in rate in fiscal year 2019 excluding the impact of restructuring and impairment charges compared to fiscal year 2018 was primarily due to large equity compensation deductions from significant vesting of restricted stock and other adjustments in the first quarter of fiscal year 2018 that were not significant for the first quarter of fiscal year 2019. This was partially offset by net benefits from the Tax Act and a more favorable earnings mix in fiscal 2019 compared to the first quarter of fiscal year 2018.
 
The Tax Act