Derivative Instruments and Hedging Activities (Tables)

6 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Notional Amounts of Outstanding Derivative Positions

The notional amounts of the Company’s foreign currency-related derivative instruments as of March 31, 2024 and September 30, 2023 were as follows:

(Millions of dollars)	Hedge Designation	March 31, 2024		September 30, 2023
Foreign exchange contracts (a)	Undesignated	$	2,220	$	3,146
Foreign currency-denominated debt (b)	Net investment hedges	1,891		1,056
Cross-currency swaps (c)	Net investment hedges	2,119		2,119

(a)Represent hedges of transactional foreign exchange exposures resulting primarily from intercompany payables and receivables. Gains and losses on these instruments are recognized immediately in income. These gains and losses are largely offset by gains and losses on the underlying hedged items, as well as the hedging costs associated with the derivative instruments. Net amounts recognized in Other (expense) income, net, during the three and six months ended March 31, 2024 and 2023 were immaterial to the Company's consolidated financial results.

(b)Represents foreign currency-denominated long-term notes outstanding which were effective as economic hedges of net investments in certain of the Company's foreign subsidiaries.

(c)Represents cross-currency swaps which were effective as economic hedges of net investments in certain of the Company's foreign subsidiaries.

The notional amounts of the Company’s interest rate-related derivative instruments as of March 31, 2024 and September 30, 2023 were as follows:

(Millions of dollars)	Hedge Designation	March 31, 2024		September 30, 2023
Interest rate swaps (a)	Fair value hedges	$	700	$	700
Forward starting interest rate swaps (b)	Cash flow hedges	—		500

(a)Represents fixed-to-floating interest rate swap agreements the Company entered into to convert the interest payments on certain long-term notes from the fixed rate to a floating interest rate based on secured overnight financing rates (“SOFR”).

(b)Represents interest rate derivatives entered into to mitigate exposure to interest rate risk related to future debt issuances.

Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss)

Net gains (losses) recorded to Accumulated other comprehensive income (loss) relating to the Company's net investment hedges for the three and six-month periods were as follows:

	Three Months Ended March 31,				Six Months Ended March 31,
(Millions of dollars)	2024		2023		2024		2023
Foreign currency-denominated debt	$	4	$	(22)	$	(25)	$	(164)
Cross-currency swaps (a)	21		(21)		$	(34)	$	(101)

(a) The amounts for the three and six months ended March 31, 2023 include a gain, net of tax, of $13 million recognized on terminated cross-currency swaps.