CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net income	$ 84.1	$ 403.2
Depreciation and amortization	80.2	77.4
Stock-based incentive compensation	22.3	20.6
Deferred income taxes	19.9	88.4
Gain on sale of assets	(1.9)	(6.3)
Unrealized loss on investments	12.7
Foreign currency transaction (gains) losses	8.2	(3.6)
Intangible asset impairment charge	2.1
Other non-cash adjustments	3.0	0.4
Changes in operating assets and liabilities	(92.3)	273.4
Net cash provided by operating activities	138.3	853.5
Investing activities:
Additions to property, plant and equipment	(160.3)	(82.8)
Additions to equipment held for rental	(5.5)	(8.5)
Acquisition of business, net of cash acquired	(19.5)	(110.6)
Proceeds from sale of equipment held for rental	6.6	13.6
Acquisition of equity securities	(15.0)	(40.6)
Other investing activities	2.8	6.6
Net cash used in investing activities	(190.9)	(222.3)
Financing activities:
Proceeds from debt (original maturities greater than three months)	10.4
Repayments of debt (original maturities greater than three months)	(225.0)
Repurchases of Common Stock	(155.0)	(107.8)
Dividends paid	(73.1)	(67.9)
Proceeds from exercise of stock options	2.8	38.2
Acquisition of Common Stock for taxes on stock-based compensation	(1.7)	(6.3)
Other financing activities	(10.2)	(4.3)
Net cash used in financing activities	(451.8)	(148.1)
Effect of exchange rate changes on cash and cash equivalents	(16.5)	(5.9)
Increase (decrease) in cash and cash equivalents	(520.9)	477.2
Cash and cash equivalents at beginning of period	995.7	898.6
Cash and cash equivalents at end of period	474.8	1,375.8
Supplemental disclosures:
Cash paid for interest	35.2	34.6
Cash paid for income taxes	207.5	125.4
Cash received from income tax refunds	1.3
Cash paid for operating lease liabilities	37.1	38.0
Operating right-of-use assets obtained	$ 6.0	$ 86.4