Supplemental Information
 12 Months Ended
Apr. 30, 2021
Segment Reporting [Abstract]  
Supplemental Information Supplemental Information
The following table presents net sales by geography: 
201920202021
Net sales:
United States$1,563 $1,690 $1,748 
Australia164 155 209 
Germany159 171 206 
United Kingdom199 180 205 
Mexico166 155 150 
Other1,073 1,012 943 
$3,324 $3,363 $3,461 

Net sales are attributed to countries based on where customers are located. See Note 8 for additional information about net sales, including net sales by product category.
Our two largest customers accounted for approximately 18% and 13% of consolidated net sales in 2020, and approximately 19% and 13% of consolidated net sales in 2021.
The net book value of property, plant, and equipment located outside the United States was $105 and $107 as of April 30, 2020 and 2021, respectively. Other long-lived assets located outside the United States are not significant.
We have concluded that our business constitutes a single operating segment.