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Other Comprehensive Income (Tables)
12 Months Ended
Apr. 30, 2020
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Comprehensive Income (Loss) [Table Text Block]
The following table presents the components of net other comprehensive income (loss) during each of the last three years:
 
Pre-Tax
 
Tax
 
Net
Year Ended April 30, 2018
 
 
 
 
 
Currency translation adjustments:
 
 
 
 
 
Net gain (loss) on currency translation
$
12

 
$
12

 
$
24

Reclassification to earnings

 

 

Other comprehensive income (loss), net
12

 
12

 
24

Cash flow hedge adjustments:
 
 
 
 
 
Net gain (loss) on hedging instruments
(54
)
 
18

 
(36
)
Reclassification to earnings1
11

 
(3
)
 
8

Other comprehensive income (loss), net
(43
)
 
15

 
(28
)
Postretirement benefits adjustments:
 
 
 
 
 
Net actuarial gain (loss) and prior service cost
5

 
(2
)
 
3

Reclassification to earnings2
20

 
(7
)
 
13

Other comprehensive income (loss), net
25

 
(9
)
 
16

 
 
 
 
 
 
Total other comprehensive income (loss), net
$
(6
)
 
$
18

 
$
12

 
 
 
 
 
 
Year Ended April 30, 2019
 
 
 
 
 
Currency translation adjustments:
 
 
 
 
 
Net gain (loss) on currency translation
$
(16
)
 
$
(11
)
 
$
(27
)
Reclassification to earnings

 

 

Other comprehensive income (loss), net
(16
)
 
(11
)
 
(27
)
Cash flow hedge adjustments:
 
 
 
 
 
Net gain (loss) on hedging instruments
69

 
(16
)
 
53

Reclassification to earnings1
(6
)
 
1

 
(5
)
Other comprehensive income (loss), net
63

 
(15
)
 
48

Postretirement benefits adjustments:
 
 
 
 
 
Net actuarial gain (loss) and prior service cost
(41
)
 
10

 
(31
)
Reclassification to earnings2
33

 
(8
)
 
25

Other comprehensive income (loss), net
(8
)
 
2

 
(6
)
 
 
 
 
 
 
Total other comprehensive income (loss), net
$
39

 
$
(24
)
 
$
15

 
 
 
 
 
 
Year Ended April 30, 2020
 
 
 
 
 
Currency translation adjustments:
 
 
 
 
 
Net gain (loss) on currency translation
$
(88
)
 
$
(6
)
 
$
(94
)
Reclassification to earnings

 

 

Other comprehensive income (loss), net
(88
)
 
(6
)
 
(94
)
Cash flow hedge adjustments:
 
 
 
 
 
Net gain (loss) on hedging instruments
61

 
(14
)
 
47

Reclassification to earnings1
(23
)
 
6

 
(17
)
Other comprehensive income (loss), net
38

 
(8
)
 
30

Postretirement benefits adjustments:
 
 
 
 
 
Net actuarial gain (loss) and prior service cost
(119
)
 
28

 
(91
)
Reclassification to earnings2
18

 
(4
)
 
14

Other comprehensive income (loss), net
(101
)
 
24

 
(77
)
 
 
 
 
 
 
Total other comprehensive income (loss), net
$
(151
)
 
$
10

 
$
(141
)
1Pre-tax amount is classified as sales in the accompanying consolidated statements of operations.
2Pre-tax amount is classified as non-operating postretirement expense in the accompanying consolidated statements of operations.