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EARNINGS PER COMMON SHARE - ADDITIONAL INFORMATION (Details) - USD ($) |  |  | 2 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 12, 2020 | Mar. 09, 2020 | May 12, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |
Potentially dilutive securities excluded from computation of earnings, amount (in shares) |  |  |  | 900,000 |  | 1,600,000
Antidilutive common stock options not included in the computation of diluted earnings per common share (in dollars per share) |  |  |  | 3,100,000 | 3,100,000 | 3,500,000
Accelerated share repurchases, authorized amount |  | $ 140,000,000 |  |  |  |
Accelerated share repurchases, settlement (payment) or receipt |  | $ 140,000,000 |  |  |  |
Stock repurchased during period, shares (in shares) | 1,000,000.0 | 2,700,000 |  |  |  |
Accelerated share repurchases, final price paid per share (usd per share) |  | $ 42.12 |  |  |  |
Arithmetic Average |  |  |  |  |  |
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |
Accelerated share repurchases, final price paid per share (usd per share) |  |  | $ 38.88 |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 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(29)) -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 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 4: 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(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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