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Other Comprehensive Income
 9 Months Ended
Jan. 31, 2023
Statement of Comprehensive Income [Abstract]  
Other Comprehensive Income Other Comprehensive Income
The following table shows the components of net other comprehensive income (loss):
Three Months EndedThree Months Ended
January 31, 2022January 31, 2023
(Dollars in millions)Pre-TaxTaxNetPre-TaxTaxNet
Currency translation adjustments:
Net gain (loss) on currency translation$(23)$(4)$(27)$111 $8 $119 
Reclassification to earnings— — — — — — 
Other comprehensive income (loss), net(23)(4)(27)111 8 119 
Cash flow hedge adjustments:
Net gain (loss) on hedging instruments23 (5)18 (33)7 (26)
Reclassification to earnings1
(2)— (2)(11)3 (8)
Other comprehensive income (loss), net21 (5)16 (44)10 (34)
Postretirement benefits adjustments:
Net actuarial gain (loss) and prior service cost— — — (21)5 (16)
Reclassification to earnings2
6 (1)5 29 (7)22 
Other comprehensive income (loss), net6 (1)5 8 (2)6 
Total other comprehensive income (loss), net$4 $(10)$(6)$75 $16 $91 
Nine Months EndedNine Months Ended
January 31, 2022January 31, 2023
(Dollars in millions)Pre-TaxTaxNetPre-TaxTaxNet
Currency translation adjustments:
Net gain (loss) on currency translation$(40)$(9)$(49)$110 $(2)$108 
Reclassification to earnings— — — — — — 
Other comprehensive income (loss), net(40)(9)(49)110 (2)108 
Cash flow hedge adjustments:
Net gain (loss) on hedging instruments53 (12)41 3 (1)2 
Reclassification to earnings1
(1)— (1)(34)8 (26)
Other comprehensive income (loss), net52 (12)40 (31)7 (24)
Postretirement benefits adjustments:
Net actuarial gain (loss) and prior service cost(1)— (1)(21)5 (16)
Reclassification to earnings2
19 (5)14 34 (8)26 
Other comprehensive income (loss), net18 (5)13 13 (3)10 
Total other comprehensive income (loss), net$30 $(26)$4 $92 $2 $94 
1Pre-tax amount for each period is classified as sales in the accompanying condensed consolidated statements of operations.
2Pre-tax amount for each period is classified as non-operating postretirement expense in the accompanying condensed consolidated statements of operations.