Note 11, Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Restructuring Charges, Amount		$ 12	$ 5
Other Tax Expense (Benefit)				$ 5
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	0.00%	95.00%		0.00%	238.00%
Tax Adjustments, Settlements, and Unusual Provisions		$ 85			$ 778
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 477			$ 477
Unrecognized Tax Benefits	126			126
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 12			$ 12
Hungarian Tax Rate Change				0.00%

Hungarian Tax Rate Change

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible restructuring charges.

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Amount of other income tax expense (benefit).

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Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement.

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Amount of unrecognized tax benefits.

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Amount of interest expense accrued for an underpayment of income taxes.

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