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Income Taxes
6 Months Ended
Feb. 29, 2020
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes

Effective Income Tax Rate
The U.S. federal statutory income tax rate and the Company's effective income tax rate are as follows:
 
Three months ended
 
Six months ended
 
February 29,
2020
 
February 28,
2019
 
February 29,
2020
 
February 28,
2019
U.S. federal statutory income tax rate
21.0
%
 
21.0
%
 
21.0
%
 
21.0
%
Effective income tax rate
108.9
%
 
33.0
%
 
71.0
%
 
27.9
%

The effective income tax rate increased for the three months and six months ended February 29, 2020, compared to the three months and six months ended February 28, 2019, primarily due to: (i) decreased income for the three months and six months ended February 29, 2020, driven in part by increased restructuring charges with minimal related tax benefit; and (ii) adjustments related to the Tax Cuts and Jobs Act of 2017 (the “Tax Act”) for the six months ended February 28, 2019, including a $13.3 million income tax benefit recorded during the three months ended November 30, 2018.
The effective tax rate differed from the U.S. federal statutory rate of 21.0% during the three months and six months ended February 29, 2020 and February 28, 2019, primarily due to: (i) losses in tax jurisdictions with existing valuation allowances; (ii) tax incentives granted to sites in Brazil, China, Malaysia, Singapore and Vietnam; and (iii) adjustments to amounts previously recorded for the Tax Act for the three months and six months ended February 28, 2019.