Financing Arrangement - Schedule Of Interest Expense Related To Notes (Details) - USD ($) $ in Millions	3 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Debt Disclosure [Abstract]
Amortization of debt issuance costs	$ (1)	$ 0
Coupon interest expense	(9)	(14)
Total interest expense	$ (10)	$ (14)

Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Name:	us-gaap_InterestExpenseDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration