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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 |  |  |
Net income | $ 2,636.9 | $ 2,106.4 | $ 2,115.8
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Stock-based compensation | 75.2 | 96.0 | 73.1
Amortization of purchased intangibles | 237.6 | 311.2 | 314.7
Depreciation and amortization | 147.8 | 153.2 | 158.6
Net losses on assets held for sale and impaired | 0.0 | 26.3 | 61.1
Gain on sale of building | 30.4 | 0.0 | 0.0
Gain on joint venture | 400.7 | 0.0 | 0.0
(Gain)/Loss on derivative contracts | 0.0 | (1.5) | 17.7
Net realized and unrealized (gains)/losses on investments | (117.0) | 5.5 | 1.8
Undistributed earnings, net of losses, of unconsolidated subsidiaries | (24.4) | (7.7) | (43.6)
Deferred income taxes | 34.8 | (41.6) | (3.7)
Change in assets and liabilities: |  |  |
Accounts receivable | (45.7) | 28.2 | 60.8
Other current assets | (55.4) | 30.4 | 110.2
Other assets | 61.3 | 71.6 | 29.2
Accounts payable | (18.6) | 7.4 | (54.1)
Income tax payable | (120.5) | 4.7 | (28.6)
Other current liabilities | 61.9 | (54.3) | (99.3)
Other liabilities | (44.8) | (28.8) | (52.8)
Other | 4.4 | 8.6 | 11.9
Net Cash Provided by Operating Activities | 2,402.4 | 2,715.6 | 2,672.8
Cash Flows from Investing Activities |  |  |
Proceeds from maturities of available-for-sale marketable securities | 9.4 | 12.3 | 18.8
Purchases of available-for-sale marketable securities | 7.8 | 11.1 | 15.4
Purchases of property, net | (127.2) | (197.5) | (245.6)
Investments in business ventures | 4.5 | 5.5 | 0.0
Proceeds from sale of business ventures | 101.4 | 26.3 | 89.6
Payment for acquisition of subsidiary's interests from the non-controlling interest | 52.9 | 0.0 | 0.0
Proceeds from the sale of building property | 39.3 | 0.0 | 0.0
Net cash proceeds from OSTTRA joint venture transaction | 100.7 | 0.0 | 0.0
Net Cash Used in Investing Activities | 58.4 | (175.5) | (152.6)
Cash Flows from Financing Activities |  |  |
Repayment issuance of commercial paper, net | 0.0 | (304.6) | (92.5)
Repayment of other borrowings | 0.0 | 0.0 | (569.2)
Proceeds from preferred stock offering | 965.0 | 0.0 | 0.0
Cash dividends | (2,189.3) | (2,110.0) | (1,695.9)
Change in performance bond and guaranty fund contributions | 71,167.8 | 49,704.8 | (2,378.5)
Payments for (proceeds from) derivative contracts | 0.0 | 0.0 | 16.0
Employee taxes paid on restricted stock vesting | (31.7) | (41.4) | (36.8)
Other | (3.1) | (2.2) | 37.6
Net Cash Provided by (Used in) Financing Activities | 69,908.7 |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect | 72,369.5 | 49,786.7 | (2,199.1)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance | 88,420.3 | 38,633.6 | 40,832.7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance | 160,789.8 | 88,420.3 | 38,633.6
Supplemental Disclosure of Cash Flow Information |  |  |
Cash and cash equivalents | 2,834.9 | 1,633.2 | 1,551.4
Restricted Cash and Cash Equivalents, Current | 4.8 | 4.7 | 4.3
Restricted Cash and Cash Equivalents, Noncurrent | 0.5 | 0.6 | 0.9
Good Faith and Margin Deposits with Broker-Dealers | 157,949.6 | 86,781.8 | 37,077.0
Income taxes paid | 755.0 | 652.7 | 591.2
Interest paid | 133.3 | 133.3 | 146.3
Dividends declared | $ 1,183.8 | 895.2 | 893.7
Restated Balance |  |  |
Cash Flows from Financing Activities |  |  |
Net Cash Provided by (Used in) Financing Activities |  | 47,246.6 | (4,719.3)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect |  | $ 49,786.7 | $ (2,199.1)

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- Definition Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. 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 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 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=123431023&loc=SL98516268-108586 Reference 4: 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=123570139&loc=d3e3044-108585 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 210 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580 + Details
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- Definition Amount of noncash expense for share-based payment arrangement. + 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 (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + 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=123570139&loc=d3e3602-108585 + Details
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