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Cash contribution to AspenTech shareholders

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Gain from periodic distribution from retained subordinated interest in Vertiv (VRT)

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Period over which distributions are expected to occur

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Periodic distribution from retained subordinated interest in Vertiv (VRT)

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Pretax periodic distribution from retained subordinated interest in Vertiv (VRT)

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions and Divestitures Narrative (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended		12 Months Ended	27 Months Ended
	Oct. 01, 2020	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021	Sep. 30, 2021	Sep. 30, 2023
Business Acquisition & Disposal [Line Items]
Purchase price of businesses, net of cash acquired						$ 37	$ 1,611
Goodwill			$ 7,631			7,631		$ 7,723
Gain on subordinated interest			0	$ (453)	$ 0	(453)	0
Proceeds from subordinated interest				$ 438		438	0
Open Systems International Inc. [Member]
Business Acquisition & Disposal [Line Items]
Deferred revenue adjustment					4		8
Open Systems International Inc. [Member] \| Order or Production Backlog [Member]
Business Acquisition & Disposal [Line Items]
Backlog amortization					$ 6		$ 17
Automation Solutions [Member]
Business Acquisition & Disposal [Line Items]
Goodwill			6,504			6,504		6,552
Automation Solutions [Member] \| Open Systems International Inc. [Member]
Business Acquisition & Disposal [Line Items]
Purchase price of businesses, net of cash acquired	$ 1,600
Annualized sales								191
Goodwill	967
Goodwill expected tax deductible amount	0
Intangibles	$ 783
Intangible assets, weighted average useful life	11 years
Deferred tax liabilities	$ 193
Climate Technologies [Member]
Business Acquisition & Disposal [Line Items]
Goodwill			$ 723			$ 723		$ 753
Forecast [Member]
Business Acquisition & Disposal [Line Items]
Pretax periodic distribution from retained subordinated interest									$ 75
Forecast [Member] \| Minimum [Member]
Business Acquisition & Disposal [Line Items]
Period over which distributions are expected to occur									2 years
Forecast [Member] \| Maximum [Member]
Business Acquisition & Disposal [Line Items]
Period over which distributions are expected to occur									3 years
Forecast [Member] \| Automation Solutions [Member] \| AspenTech [Member]
Business Acquisition & Disposal [Line Items]
Cash contribution to AspenTech shareholders		$ 6,000
Business Acquisition, Percentage of Voting Interests Acquired		55.00%