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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019
Statement of Cash Flows [Abstract] |  |
Net income | $ 386.4 | $ 620.4
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and loss on disposal of property, plant, and equipment | 102.5 | 67.8
Amortization of intangible assets | 24.7 | 20.5
Loss (gain) on investments, accretion, and amortization, net | (2.4) | (1.6)
Deferred income taxes | 52.5 | 52.7
Share-based compensation expense | 186.5 | 157.7
Amortization of contract acquisition assets | 8.2 | 5.9
Changes in operating assets and liabilities, net of effects of acquisition: |  |
Accounts receivable | 136.9 | 48.9
Inventory | (120.1) | (178.0)
Prepaids and other assets | (95.5) | (89.2)
Accounts payable | (3.6) | 21.7
Accrued compensation and employee benefits | (83.0) | (33.3)
Deferred revenue | 4.1 | 8.7
Other liabilities | (14.5) | (53.0)
Net cash provided by operating activities | 582.7 | 649.2
Investing activities: |  |
Purchase of investments | (1,426.8) | (1,815.9)
Proceeds from Sale of Investments | 800.7 | 61.1
Proceeds from maturities of investments | 1,298.6 | 1,418.9
Purchase of property, plant, and equipment and intellectual property | (215.2) | (196.9)
Acquisition of businesses, net of cash | (37.7) | 1.2
Net cash provided by (used in) investing activities | 419.6 | (531.6)
Financing activities: |  |
Proceeds from issuance of common stock relating to employee stock plans | 154.0 | 119.6
Taxes paid related to net share settlement of equity awards | (155.1) | (145.0)
Repurchase of common stock | (100.0) | (200.0)
Capital contribution from noncontrolling interest | 0.0 | 10.0
Payment of deferred purchase consideration | (30.0) | (5.0)
Net cash provided by (used in) financing activities | (131.1) | (220.4)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash | (1.6) | (1.3)
Net increase (decrease) in cash, cash equivalents, and restricted cash | 869.6 | (104.1)
Cash, cash equivalents, and restricted cash, beginning of period | 1,182.6 | 909.4
Cash, cash equivalents, and restricted cash, end of period | $ 2,052.2 | $ 805.3

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3044-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98513485&loc=SL98516268-108586 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 230 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=98513438&loc=d3e33268-110906 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3521-108585 + Details
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