CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 766.7	$ 715.2
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	65.4	57.5
Non-cash operating lease cost	18.7
Stock-based compensation (Note 9)	62.9	55.0
Inventory write off	73.1	0.0
Change in fair value of contingent consideration liabilities, net (Note 7)	12.4	8.3
Deferred income taxes	9.5	29.8
Purchase of intellectual property (Note 4)	24.0	0.0
Other	(4.8)	3.0
Changes in operating assets and liabilities:
Accounts and other receivables, net	(70.3)	(0.3)
Inventories	(83.9)	(43.5)
Accounts payable and accrued liabilities	(109.2)	4.0
Income taxes	17.0	(208.6)
Prepaid expenses and other current assets	(2.5)	10.9
Other	1.0	2.5
Net cash provided by operating activities	780.0	633.8
Cash flows from investing activities
Capital expenditures	(182.9)	(181.1)
Purchases of held-to-maturity investments (Note 5)	(30.0)	(190.0)
Proceeds from held-to-maturity investments (Note 5)	50.0	388.1
Purchases of available-for sale investments (Note 5)	(95.0)	(115.3)
Proceeds from available-for-sale investments (Note 5)	278.3	193.1
Investments in intangible assets (Note 4)	(24.0)	(3.0)
Payment of contingent consideration	0.0	(10.0)
Acquisition (Note 6)	(100.2)	0.0
Payment for acquisition option	(35.0)	0.0
Other	(11.7)	(10.8)
Net cash (used in) provided by investing activities	(150.5)	71.0
Cash flows from financing activities
Proceeds from issuance of debt, net	12.0	686.4
Payments on debt and capital lease obligations	(23.7)	(524.1)
Purchases of treasury stock	(263.3)	(523.5)
Proceeds from stock plans	125.5	119.3
Payment of contingent consideration	0.0	(15.1)
Other	(3.1)	0.5
Net cash used in financing activities	(152.6)	(256.5)
Effect of currency exchange rate changes on cash and cash equivalents	(4.4)	(5.3)
Net increase in cash and cash equivalents	472.5	443.0
Cash and cash equivalents at beginning of period	714.1	818.3
Cash and cash equivalents at end of period	$ 1,186.6	$ 1,261.3

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The cash inflow associated with the amount received from the stock plan during the period.

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Amount of cash outflow for debt, mandatory redeemable security, and principal payment for finance lease obligation.

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The amount of the write-off for research and development assets that were acquired in a transaction other than a business combination.

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Amount of noncash expense for share-based payment arrangement.

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