Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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No definition available.

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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Long-Term Debt (Narrative) (Details) $ in Millions, ¥ in Billions	3 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 17, 2025 USD ($)	Jun. 17, 2025 JPY (¥)	Mar. 04, 2025 USD ($)
U.S. government and agency
Debt Instrument, Redemption [Line Items]
Financial Instruments, Owned, US Government and Agency Obligations, at Fair Value \| $				$ 1,250
senior debt $1,250 M 50740% 2055
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount \| $				$ 1,250
Payments of Debt Issuance Costs \| $	$ 13
Debt Instrument, Interest Rate, Stated Percentage				5.74%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	1.2373%
JPY private placement senior debt $612M June 2025
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount \| $		$ 612
Payments of Debt Issuance Costs \| $	$ 5
JPY Private Placement Senior Notes 10.0 billion June 2032
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 10.0
Debt Instrument, Interest Rate, Stated Percentage		2.14%	2.14%
JPY Private Placement Senior Notes 15.0 billion June 2035
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 15.0
Debt Instrument, Interest Rate, Stated Percentage		2.46%	2.46%
JPY Private Placement Senior Notes 10.7 billion June 2037
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 10.7
Debt Instrument, Interest Rate, Stated Percentage		2.59%	2.59%
JPY Private Placement Senior Notes 12.1 billion June 2040
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 12.1
Debt Instrument, Interest Rate, Stated Percentage		2.83%	2.83%
JPY Private Placement Senior Notes 23.6 billion June 2045
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 23.6
Debt Instrument, Interest Rate, Stated Percentage		3.29%	3.29%
JPY Private Placement Senior Notes 16.4 billion June 2055
Debt Instrument, Redemption [Line Items]
Debt Instrument, Face Amount			¥ 16.4
Debt Instrument, Interest Rate, Stated Percentage		3.62%	3.62%