Percentage Of Foreign Exchange Rate Exposure Hedged Maximum

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Percentage Of Foreign Exchange Rate Exposure Hedged Minimum

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

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Nominal or face amount used to calculate payments on the derivative asset.

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities.

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Amount of gain from excluded component of derivative hedge, recognized in earnings. Excludes recognition under systematic and rational method.

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Nominal or face amount used to calculate payments on the derivative liability.

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The number of derivative instruments of a particular group held by the entity.

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Amount, before tax and reclassification, of gain (loss) from derivative designated and qualifying as net investment hedge.

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Amount, before tax, of reclassification from accumulated other comprehensive income (AOCI) for gain (loss) from derivative designated and qualifying as net investment hedge.

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Derivative Instruments and Hedging Activities (Details) € in Millions	3 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 JPY (¥) instrument	Dec. 31, 2019 EUR (€) instrument	Dec. 31, 2019 USD ($) instrument	Sep. 30, 2019 JPY (¥) instrument	Sep. 30, 2019 USD ($) instrument	Sep. 30, 2018 EUR (€) instrument
Derivative [Line Items]
Percentage of foreign exchange rate exposure hedged, minimum			70.00%	70.00%	70.00%
Percentage of foreign exchange rate exposure hedged, maximum			90.00%	90.00%	90.00%
Cash collateral pledged					$ 0		$ 0
Cash collateral received					0		$ 0
Foreign currency exchange derivatives
Derivative [Line Items]
Notional amount of derivative asset					$ 950,000,000
Interest rate cap
Derivative [Line Items]
Number of instruments held \| instrument			2	2	2
Notional amount of derivative asset					$ 200,000,000
Net Investment Hedging \| Cross-currency interest rate swaps
Derivative [Line Items]
Number of instruments held \| instrument								2
Notional amount of derivative asset \| €								€ 160
Net Investment Hedging \| Cross-currency interest rate swaps \| Europe
Derivative [Line Items]
Number of instruments held \| instrument			1	1	1
Notional amount of derivative asset \| €				€ 80
Net Investment Hedging \| Cross-currency interest rate swaps \| Japan
Derivative [Line Items]
Number of instruments held \| instrument			1	1	1	1	1
Notional amount of derivative asset \| ¥			¥ 11			¥ 11,000,000,000
Net Investment Hedging \| Foreign currency exchange derivatives
Derivative [Line Items]
Effective portion of pretax gains (loss) related to net investment hedges	$ (29,000,000)	$ 22,000,000
Gains (losses) reclassified into income for net investment hedges	0	0
Cash Flow Hedging \| Foreign currency exchange derivatives
Derivative [Line Items]
Ineffective portion of gain (loss) recognized in income	$ 0	$ 0
Long-term debt \| Derivatives and Hedging Activities Designated as Hedging Instruments under ASC 815
Derivative [Line Items]
Notional value of derivative liability \| €				€ 1,000
Interest rate (as percent)			3.50%	3.50%	3.50%