Acquisitions and divestitures - Schedule of Preliminary Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Sep. 30, 2025	Sep. 18, 2025	Jun. 30, 2025
Business Combination [Line Items]
Goodwill	$ 11,141		$ 10,694
Curtis Instruments, Inc
Business Combination [Line Items]
Cash and cash equivalents		$ 53
Accounts receivable		38
Inventories		82
Prepaid expenses		5
Intangible assets		551
Property, plant and equipment		54
Other long-term assets		20
Accounts payable, trade		(32)
Other current liabilities		(19)
Deferred income taxes		(139)
Other long-term liabilities		(20)
Net assets acquired		593
Goodwill		472
Total purchase price		$ 1,065