CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Consolidated net income	$ 280.6	$ 161.4	$ 198.0
Adjustments to reconcile consolidated net income to cash flows from operating activities:
Depreciation and amortization	89.1	80.4	75.6
Stock-based compensation expense	17.2	16.0	9.6
Deferred income taxes	(5.8)	(22.5)	(5.4)
Other non-cash expenses, net	26.9	27.3	10.1
Changes in operating assets and liabilities, net of acquisitions :
Accounts receivable	(95.3)	40.8	(5.0)
Inventories	(67.0)	(91.6)	(60.2)
Accounts payable and accrued expenses	61.4	(2.4)	15.9
Income taxes payable	(44.3)	42.9	13.1
Deferred revenue	20.3	16.9	7.3
Customer advances	18.5	51.7	4.2
Other changes in operating assets and liabilities	(19.2)	11.3	(49.8)
Net cash provided by operating activities	282.4	332.2	213.4
Cash flows from investing activities:
Purchases of short-term investments	(148.0)	(150.0)	(6.4)
Maturity of short-term investments	98.2	106.1
Purchase of investments held to maturity	(0.5)	(1.2)
Cash paid for acquisitions, net of cash acquired	(65.0)	(59.2)	(90.0)
Purchases of property, plant and equipment	(92.0)	(97.2)	(73.0)
Proceeds from sales of property, plant and equipment	4.9	0.2	11.0
Net proceeds from cross-currency swap agreements	10.0	8.6
Net cash used in investing activities	(192.4)	(192.7)	(158.4)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	492.8		597.9
Repayment of long-term debt	(0.8)		(15.0)
Repayments of revolving lines of credit		(305.1)	(361.9)
Proceeds from revolving lines of credit		297.5	250.6
Repayment of other debt, net	(2.3)	(0.7)	(4.6)
Payment of deferred financing costs	(0.1)	(0.1)	(4.4)
Proceeds from issuance of common stock, net	7.0	3.3	10.9
Payment of contingent consideration	(0.4)	(7.5)	(6.2)
Payment of dividends to common stockholders	(24.2)	(24.6)	(25.0)
Repurchase of common stock	(153.3)	(123.2)	(142.3)
Cash payments to noncontrolling interest		(1.2)
Net cash provided by (used in) financing activities	318.7	(161.6)	300.0
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(22.5)	25.7	0.6
Net change in cash, cash equivalents and restricted cash	386.2	3.6	355.6
Cash, cash equivalents and restricted cash at beginning of year	685.5	681.9	326.3
Cash, cash equivalents and restricted cash at end of year	1,071.7	685.5	681.9
Supplemental cash flow information
Cash paid for interest	19.6	28.7	16.0
Cash paid for taxes	145.5	43.0	61.3
Restricted cash period beginning balance	3.7	3.6	3.9
Restricted cash period ending balance	$ 3.5	$ 3.7	$ 3.6