Acquisitions and Divestitures Narrative (Details) $ / shares in Units, $ in Millions	3 Months Ended		8 Months Ended		12 Months Ended	27 Months Ended
	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Mar. 31, 2023 USD ($)	Mar. 31, 2023 AUD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	May 16, 2022 USD ($) $ / shares	Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
Cash and equivalents	$ 2,271,000,000	$ 4,726,000,000			$ 1,804,000,000			$ 2,354,000,000
Net sales	3,373,000,000	3,156,000,000
Acquisition/divestiture costs	0	23,000,000
Proceeds from Issuance of Debt					3,000,000,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	2,780,000,000	0
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT)	0	453,000,000
Proceeds from subordinated interest	15,000,000	438,000,000
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%
Acquisition-related Costs
Business Acquisition [Line Items]
Acquisition/divestiture costs		$ 32,000,000
Interest Expense		37,000,000
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	$ 168,000,000
Acquisition/divestiture costs		$ 22,000,000
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