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IMPACT OF CHANGE IN ACCOUNTING PRINCIPLE ON CURRENT AND PRIOR PERIOD FINANCIAL STATEMENTS (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Statement |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  | $ 150.2 | $ 33.3 | $ 25.9
Consolidated income before income taxes |  |  |  |  |  |  |  |  | 685.2 | (413.8) | 370.4
Provision for income taxes |  |  |  |  |  |  |  |  | (159.0) | 35.7 | (53.4)
Consolidated net income (loss) | $ 77.7 | $ 229.3 | $ 100.4 | $ 118.8 | $ 17.4 | $ 85.2 | $ 71.0 | $ (551.7) | 526.2 | (378.1) | 317.0
Net income attributable to Equifax | $ 74.5 | $ 228.5 | $ 100.2 | $ 116.9 | $ 15.8 | $ 83.8 | $ 69.5 | $ (553.2) | $ 520.1 | $ (384.1) | $ 310.5
Net income (loss) attributable to Equifax (in dollars per share) | $ 0.61 | $ 1.88 | $ 0.83 | $ 0.96 | $ 0.13 | $ 0.69 | $ 0.58 | $ (4.58) | $ 4.28 | $ (3.18) | $ 2.58
Net income (loss) attributable to Equifax (in dollars per share) | $ 0.61 | $ 1.86 | $ 0.82 | $ 0.95 | $ 0.13 | $ 0.69 | $ 0.57 | $ (4.55) | $ 4.24 | $ (3.15) | $ 2.56
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ 77.7 | $ 229.3 | $ 100.4 | $ 118.8 | $ 17.4 | $ 85.2 | $ 71.0 | $ (551.7) | $ 526.2 | $ (378.1) | $ 317.0
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 185.2 | (24.9) | (218.9)
Change in unrecognized prior service cost and actuarial (losses) gains related to our pension and other postretirement benefit plans, net |  |  |  |  |  |  |  |  | (1.1) | 4.3 | 302.2
Change in cumulative gain from cash flow hedging transactions, net |  |  |  |  |  |  |  |  | 0.1 | 0.1 | 0.0
Comprehensive income |  |  |  |  |  |  |  |  | 710.4 | (398.6) | 400.3
Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Retained earnings | 4,185.4 |  |  |  | 3,854.6 |  |  |  | 4,185.4 | 3,854.6 |
Accumulated other comprehensive loss | (171.4) |  |  |  | (354.4) |  |  |  | (171.4) | (354.4) | (334.5)
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) | 77.7 | 229.3 | 100.4 | 118.8 | 17.4 | 85.2 | 71.0 | (551.7) | 526.2 | (378.1) | 317.0
Deferred income taxes |  |  |  |  |  |  |  |  | 66.5 | (82.7) | 1.3
Other assets, current and long-term |  |  |  |  |  |  |  |  | 35.8 | (78.8) | (15.4)
Current and long-term liabilities, excluding debt |  |  |  |  |  |  |  |  | 106.9 | 527.7 | 48.3
Cash provided by operating activities |  |  |  |  |  |  |  |  | 946.2 | 313.8 | 672.2
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 2,622.9 |  |  |  | 3,155.6 | 2,622.9 | 3,155.6 | 3,239.0
Net income (loss) | 77.7 | 229.3 | 100.4 | 118.8 | 17.4 | 85.2 | 71.0 | (551.7) | 526.2 | (378.1) | 317.0
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 184.2 | (20.4) | (212.3)
Ending Balance | 3,210.3 |  |  |  | 2,622.9 |  |  |  | 3,210.3 | 2,622.9 | 3,155.6
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation | (168.4) |  |  |  | (352.4) |  |  |  | (168.4) | (352.4) | (328.1)
Foreign currency translation | (168.5) |  |  |  |  |  |  |  | (168.5) |  | (328.0)
Unrecognized actuarial losses and prior service cost related to our pension and other postretirement benefit plans, net of accumulated tax | (2.0) |  |  |  | (0.9) |  |  |  | (2.0) | (0.9) | (5.2)
Unrecognized actuarial losses and prior service cost related to our pension and other postretirement benefit plans, net of accumulated tax | (1.9) |  |  |  |  |  |  |  | (1.9) |  |
Cash flow hedging transactions, net of tax | (1.0) |  |  |  | (1.1) |  |  |  | (1.0) | (1.1) | (1.2)
Accumulated other comprehensive loss | (171.4) |  |  |  | (354.4) |  |  |  | (171.4) | (354.4) | (334.5)
Accumulated other comprehensive loss |  |  |  |  |  |  |  |  |  |  | (334.4)
Retained Earnings |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 3,854.6 |  |  |  | 4,425.9 | 3,854.6 | 4,425.9 | 4,600.6
Net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Ending Balance | 4,185.4 |  |  |  | 3,854.6 |  |  |  | 4,185.4 | 3,854.6 | 4,425.9
Retained Earnings | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 0.0 |  | 0.0 | (298.4)
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
Accumulated Other Comprehensive Loss |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (354.4) |  |  |  | (334.5) | (354.4) | (334.5) | (412.0)
Beginning Balance |  |  |  |  |  |  |  | (334.4) |  | (334.4) |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 183.0 | (19.9) | (218.1)
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  | (20.0) | (218.0)
Ending Balance | (171.4) |  |  |  | (354.4) |  |  |  | (171.4) | (354.4) | (334.5)
Ending Balance |  |  |  |  |  |  |  |  |  |  | (334.4)
Accumulated Other Comprehensive Loss | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 302.6
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
Equifax Shareholders |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 184.0 | (24.4) | (224.7)
Change in unrecognized prior service cost and actuarial (losses) gains related to our pension and other postretirement benefit plans, net |  |  |  |  |  |  |  |  | (1.1) | 4.3 | 302.2
Change in cumulative gain from cash flow hedging transactions, net |  |  |  |  |  |  |  |  | 0.1 | 0.1 | 0.0
Comprehensive income |  |  |  |  |  |  |  |  | 703.1 | (404.1) | 388.0
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 520.1 | (384.1) | 310.5
As Reported |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  | 159.4 | 14.1 | 11.8
Consolidated income before income taxes |  |  |  |  |  |  |  |  | 694.4 | (433.0) | 356.3
Provision for income taxes |  |  |  |  |  |  |  |  | (161.3) | 40.2 | (50.0)
Consolidated net income (loss) | 97.7 | 225.0 | 96.1 | 114.5 | 10.8 | 82.5 | 68.3 | (554.4) | 533.1 | (392.8) | 306.3
Net income attributable to Equifax | $ 94.5 | $ 224.2 | $ 95.9 | $ 112.6 | $ 9.2 | $ 81.1 | $ 66.8 | $ (555.9) | $ 527.0 | $ (398.8) | $ 299.8
Net income (loss) attributable to Equifax (in dollars per share) | $ 0.77 | $ 1.84 | $ 0.79 | $ 0.93 | $ 0.08 | $ 0.67 | $ 0.55 | $ (4.60) | $ 4.34 | $ (3.30) | $ 2.49
Net income (loss) attributable to Equifax (in dollars per share) | $ 0.77 | $ 1.82 | $ 0.78 | $ 0.92 | $ 0.07 | $ 0.66 | $ 0.55 | $ (4.57) | $ 4.30 | $ (3.27) | $ 2.47
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ 97.7 | $ 225.0 | $ 96.1 | $ 114.5 | $ 10.8 | $ 82.5 | $ 68.3 | $ (554.4) | $ 533.1 | $ (392.8) | $ 306.3
Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Retained earnings | 4,469.5 |  |  |  | 4,131.8 |  |  |  | 4,469.5 | 4,131.8 |
Accumulated other comprehensive loss | (455.5) |  |  |  | (631.6) |  |  |  | (455.5) | (631.6) | (626.3)
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) | 97.7 | 225.0 | 96.1 | 114.5 | 10.8 | 82.5 | 68.3 | (554.4) | 533.1 | (392.8) | 306.3
Deferred income taxes |  |  |  |  |  |  |  |  | 68.6 | (87.2) | (2.3)
Current and long-term liabilities, excluding debt |  |  |  |  |  |  |  |  | 97.9 | 546.9 | 62.6
Cash provided by operating activities |  |  |  |  |  |  |  |  | 946.2 | 313.8 | 672.2
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 97.7 | 225.0 | 96.1 | 114.5 | 10.8 | 82.5 | 68.3 | (554.4) | 533.1 | (392.8) | 306.3
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation | (168.5) |  |  |  | (352.4) |  |  |  | (168.5) | (352.4) | (328.0)
Unrecognized actuarial losses and prior service cost related to our pension and other postretirement benefit plans, net of accumulated tax | (286.0) |  |  |  | (278.1) |  |  |  | (286.0) | (278.1) | (297.1)
Cash flow hedging transactions, net of tax | (1.0) |  |  |  | (1.1) |  |  |  | (1.0) | (1.1) | (1.2)
Accumulated other comprehensive loss | (455.5) |  |  |  | (631.6) |  |  |  | (455.5) | (631.6) | (626.3)
As Reported | Retained Earnings |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | 4,131.8 |  |  |  | 4,717.8 | 4,131.8 | 4,717.8 | 4,600.6
Net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Ending Balance | 4,469.5 |  |  |  | 4,131.8 |  |  |  | 4,469.5 | 4,131.8 | 4,717.8
As Reported | Retained Earnings | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 4.2
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
As Reported | Accumulated Other Comprehensive Loss |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (631.6) |  |  |  | (626.3) | (631.6) | (626.3) | (412.0)
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 176.1 | (5.3) | (207.3)
Ending Balance | (455.5) |  |  |  | (631.6) |  |  |  | (455.5) | (631.6) | (626.3)
As Reported | Accumulated Other Comprehensive Loss | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 0.0 |  | 0.0 | 0.0
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
As Reported | Equifax Shareholders |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 184.0 | (24.4) | (224.7)
Change in unrecognized prior service cost and actuarial (losses) gains related to our pension and other postretirement benefit plans, net |  |  |  |  |  |  |  |  | (8.0) | 19.0 | 10.4
Change in cumulative gain from cash flow hedging transactions, net |  |  |  |  |  |  |  |  | 0.1 | 0.1 | 0.0
Comprehensive income |  |  |  |  |  |  |  |  | 703.1 | (404.1) | 85.5
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | 527.0 | (398.8) | 299.8
Revisions |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Other income, net |  |  |  |  |  |  |  |  | (9.2) | 19.2 | 14.1
Consolidated income before income taxes |  |  |  |  |  |  |  |  | (9.2) | 19.2 | 14.1
Provision for income taxes |  |  |  |  |  |  |  |  | 2.3 | (4.5) | (3.4)
Consolidated net income (loss) | (20.0) | 4.3 | 4.3 | 4.3 | 6.6 | 2.7 | 2.7 | 2.7 | (6.9) | 14.7 | 10.7
Net income attributable to Equifax | $ (20.0) | $ 4.3 | $ 4.3 | $ 4.3 | $ 6.6 | $ 2.7 | $ 2.7 | $ 2.7 | $ (6.9) | $ 14.7 | $ 10.7
Net income (loss) attributable to Equifax (in dollars per share) | $ (0.16) | $ 0.04 | $ 0.04 | $ 0.03 | $ 0.05 | $ 0.02 | $ 0.03 | $ 0.02 | $ (0.06) | $ 0.12 | $ 0.09
Net income (loss) attributable to Equifax (in dollars per share) | $ (0.16) | $ 0.04 | $ 0.04 | $ 0.03 | $ 0.06 | $ 0.03 | $ 0.02 | $ 0.02 | $ (0.06) | $ 0.12 | $ 0.09
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | $ (20.0) | $ 4.3 | $ 4.3 | $ 4.3 | $ 6.6 | $ 2.7 | $ 2.7 | $ 2.7 | $ (6.9) | $ 14.7 | $ 10.7
Balance Sheet |  |  |  |  |  |  |  |  |  |  |
Retained earnings | (284.1) |  |  |  | (277.2) |  |  |  | (284.1) | (277.2) |
Accumulated other comprehensive loss | 284.1 |  |  |  | 277.2 |  |  |  | 284.1 | 277.2 | 291.9
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) | (20.0) | 4.3 | 4.3 | 4.3 | 6.6 | 2.7 | 2.7 | 2.7 | (6.9) | 14.7 | 10.7
Deferred income taxes |  |  |  |  |  |  |  |  | (2.1) | 4.5 | 3.6
Current and long-term liabilities, excluding debt |  |  |  |  |  |  |  |  | 9.0 | (19.2) | (14.3)
Cash provided by operating activities |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (0.4) |  |  |  |  | (0.4) |  | 4.2
Net income (loss) | (20.0) | $ 4.3 | $ 4.3 | 4.3 | 6.6 | $ 2.7 | $ 2.7 | 2.7 | (6.9) | 14.7 | 10.7
Ending Balance |  |  |  |  | (0.4) |  |  |  |  | (0.4) |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |  |  |  |  |  |  |  |
Foreign currency translation | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 0.0
Unrecognized actuarial losses and prior service cost related to our pension and other postretirement benefit plans, net of accumulated tax | 284.1 |  |  |  | 277.2 |  |  |  | 284.1 | 277.2 | 291.9
Cash flow hedging transactions, net of tax | 0.0 |  |  |  | 0.0 |  |  |  | 0.0 | 0.0 | 0.0
Accumulated other comprehensive loss | 284.1 |  |  |  | 277.2 |  |  |  | 284.1 | 277.2 | 291.9
Revisions | Retained Earnings |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | (0.4) |  |  |  | (291.9) | (0.4) | (291.9) | (298.4)
Beginning Balance |  |  |  | (277.2) |  |  |  |  | (277.2) |  | 0.0
Net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Ending Balance | (284.1) |  |  |  | (0.4) |  |  |  | (284.1) | (0.4) | (291.9)
Ending Balance |  |  |  |  | (277.2) |  |  |  |  | (277.2) |
Revisions | Retained Earnings | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | 0.0 |  | 0.0 | (302.6)
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
Revisions | Accumulated Other Comprehensive Loss |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  | $ 277.2 |  |  |  | 291.9 | 277.2 | 291.9 | 302.6
Beginning Balance |  |  |  |  |  |  |  |  |  |  | 0.0
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 6.9 | (14.7) |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  |  |  | (10.7)
Ending Balance | $ 284.1 |  |  |  | $ 277.2 |  |  |  | 284.1 | 277.2 | 291.9
Revisions | Accumulated Other Comprehensive Loss | Cumulative adjustment from change in accounting principle |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning Balance |  |  |  |  |  |  |  | $ 0.0 |  | 0.0 | 302.6
Ending Balance |  |  |  |  |  |  |  |  |  |  | 0.0
Revisions | Equifax Shareholders |  |  |  |  |  |  |  |  |  |  |
Income Statement |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Statement of Comprehensive Income |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Foreign currency translation adjustment |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Change in unrecognized prior service cost and actuarial (losses) gains related to our pension and other postretirement benefit plans, net |  |  |  |  |  |  |  |  | 6.9 | (14.7) | 291.8
Change in cumulative gain from cash flow hedging transactions, net |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 0.0
Comprehensive income |  |  |  |  |  |  |  |  | 0.0 | 0.0 | 302.5
Statement of Cash Flows |  |  |  |  |  |  |  |  |  |  |
Consolidated net income (loss) |  |  |  |  |  |  |  |  | (6.9) | 14.7 | 10.7
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) |  |  |  |  |  |  |  |  | $ (6.9) | $ 14.7 | $ 10.7

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