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Debt and Other Obligations Debt and Other Obligations - Secured Notes of SPEs (Details) - USD ($) $ in Millions	Sep. 30, 2023	Sep. 30, 2013	Jan. 17, 2012
Secured notes
Secured notes	$ 40	$ 360
Interest rate			7.10%

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- Definition

[Line Items] for Secured notes of SPEs [Table]

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No definition available.

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

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

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