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Variable Interest Entities Variable Interest Entities (Details) - USD ($) $ in Millions	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Oct. 02, 2024	Sep. 30, 2024	Sep. 30, 2013	Sep. 30, 2012
Variable Interest Entities
Other long-term liabilities	$ 1,479			$ 1,712
Accrued interest	30			9
VIE Financing
Face amount	$ 40				$ 360
Financial instruments subject to mandatory redemption, interest rate, stated percentage	7.00%
Liabilities
Current maturities of long-term debt of variable interest entities	$ 46			37
Long-term debt of variable interest entities, net	1,675			897
Liabilities, Current	7,333			5,873
Restricted cash				0
Assets, Total	58,363			57,703
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entities
Other long-term liabilities	16			16
Liabilities	1,768			960		$ 1,000
VIE Financing
Debt and Lease Obligation			$ 800
Liabilities
Liabilities, Current	77			47
Interest Expense	22	$ 12
Accounts Payable and Accrued Liabilities	1			1
Assets, Total	25			0
Cash			775
JSCCG
VIE Financing
Face amount						900
Liabilities
Restricted cash				0
Holdco
VIE Financing
Face amount						$ 100
SCCG
VIE Financing
Debt and Lease Obligation					$ 400
JACTG
VIE Financing
Face amount			720
Liabilities
Restricted cash	$ 25			$ 0
JHLLC
VIE Financing
Face amount			$ 80

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