CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Cash from operating activities:
Net income	$ 943.3	$ 744.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	485.8	236.3
Stock-based compensation expense	34.2	26.6
Deferred income tax provision (benefit)	165.6	(13.9)
Net change in components of working capital	(499.8)	(271.3)
Net change in other long-term assets and liabilities	(7.6)	43.0
Net cash provided by operating activities	1,121.5	764.9
Cash from investing activities:
Capital expenditures	(291.6)	(188.6)
Proceeds from disposals of property, plant and equipment	1.3	4.1
Purchases of investments	(232.6)	(3.1)
Sales and maturities of investments	83.9	7.2
Acquisitions, net of cash acquired	(10,591.8)	(2,172.2)
Other, net	0.0	0.0
Net cash used in investing activities	(11,030.8)	(2,352.6)
Cash from financing activities:
Proceeds from issuance of senior notes and other long-term debt	3,645.1	0.0
Repayments of senior notes and other long-term debt	(350.7)	(400.5)
Borrowings (repayments) under commercial paper programs, net	0.0	639.8
Payment of costs related to debt financing	(3.4)	0.0
Purchase of treasury stock	(178.0)	(180.9)
Proceeds from exercise of stock options	95.9	53.2
Dividend payments	(306.7)	(199.5)
Other, net	(3.9)	(0.7)
Net cash provided by (used in) financing activities	2,898.3	(88.6)
Effect of exchange rate changes on cash and cash equivalents	8.4	16.5
Net decrease in cash and cash equivalents	(7,002.6)	(1,659.8)
Cash and cash equivalents balance, beginning of period	11,130.6	3,317.0	$ 3,317.0
Cash and cash equivalents balance, end of period	4,128.0	1,657.2	$ 11,130.6
Cash paid for:
Interest	120.1	51.7
Income taxes, net	$ 347.7	$ 167.9