Condensed Consolidated Statements of Cash Flow - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Cash from operating activities:
Net income	$ 429.2	$ 331.8
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	91.1	76.7
Stock-based compensation expense	19.7	19.1
Deferred income tax provision (benefit)	13.4	14.2
Net change in components of working capital	(182.9)	(114.6)
Net change in other long-term assets and liabilities	(19.7)	(6.2)
Net cash provided by operating activities	350.8	321.0
Cash from investing activities:
Capital expenditures	(78.1)	(78.4)
Proceeds from disposals of property, plant and equipment	1.8	0.9
Purchases of investments	(100.3)	(46.2)
Sales and maturities of investments	35.8	48.5
Acquisitions, net of cash acquired	0.0	(185.6)	$ (2,225.4)
Other	(3.3)	(2.4)
Net cash used in investing activities	(144.1)	(263.2)
Cash from financing activities:
Proceeds from issuance of senior notes and other long-term debt	0.2	1.2
Repayments of senior notes and other long-term debt	(2.5)	(0.8)
Proceeds from short-term borrowings	20.1	0.0
(Repayments) borrowings under commercial paper programs, net	138.4	811.9
Purchase of treasury stock	(204.0)	(152.8)
Proceeds from exercise of stock options	20.0	21.1
Distributions to and purchases of noncontrolling interests	(3.6)	(7.6)
Dividend payments	(119.8)	(86.8)
Net cash (used in) provided by financing activities	(151.2)	586.2
Effect of exchange rate changes on cash and cash equivalents	(5.1)	(18.4)
Net (decrease) increase in cash and cash equivalents	50.4	625.6
Cash and cash equivalents balance, beginning of period	1,197.1	1,702.0	1,702.0
Cash and cash equivalents balance, end of period	1,247.5	2,327.6	$ 1,197.1
Cash paid for:
Interest	27.6	28.1
Income taxes, net	$ 93.8	$ 75.2