Acquisitions and divestitures - Schedule of Preliminary Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Sep. 18, 2025	Dec. 31, 2025	Jun. 30, 2025
Business Combination [Line Items]
Goodwill		$ 11,149	$ 10,694
Curtis Instruments, Inc
Business Combination [Line Items]
Cash and cash equivalents	$ 53
Accounts receivable	38
Inventories	79
Prepaid expenses	5
Intangible assets	551
Property, plant and equipment	53
Other long-term assets	22
Accounts payable, trade	(32)
Other current liabilities	(19)
Deferred income taxes	(139)
Other long-term liabilities	(21)
Net assets acquired	590
Goodwill	475
Total purchase price	1,065
Measurement period adjustments, cash and cash equivalents	0
Measurement period adjustments, accounts receivable	0
Measurement period adjustments, inventory	(3)
Measurement period adjustments, prepaid expenses and other	0
Measurement period adjustments, intangible assets	0
Measurement period adjustments, property, plant and equipment	(1)
Measurement period adjustments, other assets	2
Measurement period adjustments, accounts payable, trade	0
Measurement period adjustments, other liabilities	0
Measurement period adjustments, deferred income taxes	0
Measurement period adjustments, other liabilities	(1)
Measurement period adjustments, net assets acquired	(3)
Measurement period adjustments, goodwill	3
Curtis Instruments, Inc | Previously Reported
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