v3.25.4

RETIREMENT-RELATED BENEFITS - OCI and AOCI (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Changes in AOCI for retirement-related benefits
Current period loss (gain)	$ (17)	$ 56	$ (175)
Curtailments and settlements	(7)	(10)	(10)
Amortization of net loss included in net periodic benefit cost	(16)	(5)	(40)
Current period prior service costs (credits)	(2)	3	(4)
Pension Plans
Changes in AOCI for retirement-related benefits
Net loss (gain) at beginning of period	296	253
Current period loss (gain)	(17)	57
Curtailments and settlements	(8)	(10)
Amortization of net loss included in net periodic benefit cost	(16)	(4)
Net loss (gain) at end of period	256	296	253
Prior service costs (credits) at beginning of period	4	8
Current period prior service costs (credits)	(2)	(2)
Amortization for prior service costs (credits) included in net periodic benefit cost	(1)	(1)
Prior service costs (credits) at end of period	1	4	$ 8
Total amounts recognized in accumulated other comprehensive loss (income)	$ 257	$ 301

Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan, exluding OPEB.

+ References

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Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of accumulated other comprehensive (income) loss for cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount, before tax, of cost (credit) of benefit change attributable to participants' prior service from plan amendment or plan initiation of defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Amount, before tax, of increase (decrease) to other comprehensive income from settlement and curtailment gain (loss) of defined benefit plan.

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Amount, before tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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Kyndryl Holdings, Inc. 10-K/A