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v3.20.4

Consolidated Statements of Cash Flows - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Operating activities |  |  |
Net income | $ 1,201.4 | $ 1,134.7 | $ 1,060.5
Reconciliation to cash provided by operating activities |  |  |
Depreciation and amortization | 975.9 | 926.3 | 845.8
Deferred income taxes and ITCs, net | 209.4 | 162.9 | 297.3
Contributions and payments related to pension and OPEB plans | (113.2) | (65.9) | (77.6)
Equity income in transmission affiliates, net of distributions | (29.1) | (2.9) | (18.6)
Change in - |  |  |
Accounts receivable and unbilled revenues, net | 16.1 | 98.2 | 23.5
Materials, supplies, and inventories | 21.2 | (1.5) | (8.8)
Other current assets | 13.4 | (7.1) | (10.0)
Accounts payable | (61.3) | 1.5 | 110.6
Other current liabilities | (41.2) | 78.7 | (67.6)
Other, net | 3.4 | 20.6 | 290.4
Net cash provided by operating activities | 2,196.0 | 2,345.5 | 2,445.5
Investing Activities |  |  |
Capital expenditures | (2,238.8) | (2,260.8) | (2,115.7)
Acquisition of Blooming Grove, net of restricted cash acquired of $24.1 | (364.6) | 0.0 | 0.0
Acquisition of Tatanka Ridge | (239.9) | 0.0 | 0.0
Acquisition of Upstream, net of cash and restricted cash acquired of $9.2 | 0.0 | (268.2) | 0.0
Acquisition of Bishop Hill III, net of restricted cash acquired of $4.5 | 0.0 | 0.0 | (162.9)
Acquisition of Forward Wind Energy Center | 0.0 | 0.0 | (77.1)
Acquisition of Coyote Ridge | 0.0 | 0.0 | (61.4)
Capital contributions to transmission affiliates | (21.2) | (52.6) | (53.5)
Proceeds from the sale of assets and businesses | 20.3 | 37.6 | 12.1
Proceeds from the sale of investments held in rabbi trust | 56.2 | 0.2 | 118.6
Purchase of investments held in rabbi trust | (37.8) | 0.0 | (65.0)
Reimbursement for ATC's construction costs | 1.1 | 32.4 | 0.0
Insurance proceeds received for property damage | 23.2 | 0.0 | 0.0
Other, net | (5.3) | 16.5 | 20.5
Net cash used in investing activities | (2,806.8) | (2,494.9) | (2,384.4)
Financing Activities |  |  |
Exercise of stock options | 43.8 | 67.0 | 29.1
Purchase of common stock | (99.2) | (140.1) | (72.4)
Dividends paid on common stock | (798.0) | (744.5) | (697.3)
Issuance of long-term debt | 2,373.6 | 1,895.0 | 1,740.0
Retirement of long-term debt | (1,767.0) | (360.1) | (953.3)
Issuance of short-term loan | 340.0 | 0.0 | 0.0
Change in other short-term debt | 606.1 | (609.3) | (4.5)
Payments for debt extinguishment and issuance costs | (55.8) | (12.5) | (9.5)
Purchase of additional ownership interest in Upstream from noncontrolling interest | (31.0) | 0.0 | 0.0
Other, net | (11.4) | (9.9) | (5.7)
Net cash provided by financing activities | 601.1 | 85.6 | 26.4
Net change in cash, cash equivalents, and restricted cash | (9.7) | (63.8) | 87.5
Cash, cash equivalents, and restricted cash at beginning of year | 82.3 | 146.1 | 58.6
Cash, cash equivalents, and restricted cash at end of year | $ 72.6 | $ 82.3 | $ 146.1

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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 + Details
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- Definition The cash inflow from a borrowing net of the cash outflow from repayment of a borrowing having initial term of repayment within three months. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3291-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3098-108585 + Details
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