Acquisitions and Divestitures Narrative (Details) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended		9 Months Ended	11 Months Ended		12 Months Ended	27 Months Ended
	Mar. 31, 2023 USD ($) $ / shares	Dec. 31, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($) $ / shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2023 AUD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Apr. 12, 2023 USD ($) $ / shares	May 16, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
Cash and equivalents	$ 2,046,000,000		$ 6,929,000,000	$ 2,046,000,000	$ 6,929,000,000				$ 1,804,000,000				$ 2,354,000,000
Net sales	3,756,000,000		3,291,000,000	7,129,000,000	6,447,000,000
Acquisition/divestiture costs	10,000,000		7,000,000	10,000,000	30,000,000
Proceeds from Issuance of Debt		$ 3,000,000,000
Revenues									$ 1,660,000,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	3,000,000		0	2,783,000,000	0
Proceeds from subordinated interest				15,000,000	438,000,000
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT)	0		0	0	453,000,000
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax					$ 358,000,000
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax, per diluted share | $ / shares					$ 0.60
AspenTech
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners												45.00%
Subsequent Event [Member]
Business Acquisition [Line Items]
Equity value											$ 8,200,000,000
Effective purchase price per share | $ / shares											$ 59.61
Acquisition-related Costs
Business Acquisition [Line Items]
Acquisition/divestiture costs					$ 44,000,000
Interest Expense			19,000,000		56,000,000
RUSSIAN FEDERATION
Business Acquisition [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	(47,000,000)
(Loss) on sale of business, net of tax	$ (47,000,000)
Disposal Group, Gain (loss) on disposal, net of tax, per diluted share | $ / shares	$ (0.08)
Backlog
Business Acquisition [Line Items]
Intangible assets, weighted average useful life	3 years
AspenTech
Business Acquisition [Line Items]
Cash contribution to AspenTech shareholders						$ 6,000,000,000
Business Acquisition, Percentage of Voting Interests Acquired												55.00%
Proceeds from Noncontrolling Interests						5,900,000,000
Adjustments to Additional Paid in Capital, Other						$ 550,000,000
Approximate per share payout | $ / shares												$ 87.69
Cash and equivalents												$ 168,000,000
Net sales	$ 151,000,000			$ 319,000,000
Acquisition/divestiture costs			$ 7,000,000		$ 30,000,000
Intangibles												4,390,000,000
AspenTech | Backlog
Business Acquisition [Line Items]
Intangibles												$ 310,000,000
Heritage AspenTech
Business Acquisition [Line Items]
Acquisition/divestiture costs		$ 68,000,000
Forecast [Member]
Business Acquisition [Line Items]
Pretax periodic distribution from retained subordinated interest										$ 75,000,000
Forecast [Member] | Minimum [Member]
Business Acquisition [Line Items]
Period over which distributions are expected to occur										2 years
Forecast [Member] | Maximum [Member]
Business Acquisition [Line Items]
Period over which distributions are expected to occur										3 years
Forecast [Member] | Micromine
Business Acquisition [Line Items]
Purchase price							$ 623,000,000	$ 900
Forecast [Member] | National Instruments
Business Acquisition [Line Items]
Business Acquisition, Share Price | $ / shares											$ 60