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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-Name Regulation S-X (SX)
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-Topic 810
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-Name Accounting Standards Codification
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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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-Topic 835
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- Definition

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

+ References

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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- References

No definition available.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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Condensed Financial Information (Parent Company) (Long-term Debt Outstanding) (Details) - Parent Company $ in Millions, ¥ in Billions	Dec. 31, 2023 USD ($)	Jul. 10, 2023 JPY (¥)	Jul. 08, 2023 JPY (¥)	Mar. 31, 2023	Dec. 31, 2022 USD ($)	Mar. 31, 2022	Dec. 31, 2021	Dec. 16, 2021 JPY (¥)	Jul. 15, 2021 JPY (¥)
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				124.00%	5.23%	100.00%	212.00%
Long-term Debt [Abstract]
Senior Notes \| $	$ 14,516				$ 13,588
Long-term Debt \| $	16,101				15,264
Senior Notes, Unaffiliated [Member]
Long-term Debt [Abstract]
Senior Notes \| $	14,516				13,588
Senior Notes, Affiliated [Member]
Long-term Debt [Abstract]
Senior Notes \| $	$ 1,585				$ 1,676
Minimum \| Senior Notes, Unaffiliated [Member]
Long-term Debt [Abstract]
Debt Instrument, Interest Rate, Effective Percentage	0.50%
Minimum \| Senior Notes, Affiliated [Member]
Long-term Debt [Abstract]
Debt Instrument, Interest Rate, Effective Percentage	1.59%
Maximum \| Senior Notes, Unaffiliated [Member]
Long-term Debt [Abstract]
Debt Instrument, Interest Rate, Effective Percentage	6.50%
Maximum \| Senior Notes, Affiliated [Member]
Long-term Debt [Abstract]
Debt Instrument, Interest Rate, Effective Percentage	7.49%
SeniorDebtYen53.7BillionJune2021 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									2.9725%
Long-term Debt [Abstract]
Senior Notes									¥ 53.7
SeniorDebtYen13.7BillionJuly2026 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									1.61%
Long-term Debt [Abstract]
Senior Notes									¥ 13.7
SeniorDebtYen14.3BillionJuly2028 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									1.755%
Long-term Debt [Abstract]
Senior Notes									¥ 14.3
SeninorDebtYen25.7BillionJuly2031 \| Senior Notes, Affiliated [Member]
Long-term Debt [Abstract]
Senior Notes									¥ 25.7
SeniorDebtYen25.7BillionJuly2028 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage									1.852%
SeniorDebtYen54.6BillionDecember2021 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								3.135%
Long-term Debt [Abstract]
Senior Notes								¥ 54.6
SeniorDebtYen12.2BillionDecember2021 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.588%
Long-term Debt [Abstract]
Senior Notes								¥ 12.2
SeniorDebtYen19.1BillionDecember2021 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.7185%
Long-term Debt [Abstract]
Senior Notes								¥ 19.1
SeniorDebtYen23.3BillionDecember2021 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage								1.85%
Long-term Debt [Abstract]
Senior Notes								¥ 23.3
SeniorDebtYen37.3BillionJuly2023 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			1.6015%
Long-term Debt [Abstract]
Senior Notes			¥ 37.3
SeniorDebtYen37.3BillionJuly2030 \| Senior Notes, Affiliated [Member]
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.1575%
Long-term Debt [Abstract]
Senior Notes		¥ 37.3
Note $80M 5.68% maturity March 2033
Condensed Financial Statements, Captions [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.68%