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Share-based Compensation Expense and Effect on Diluted Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Share-Based Payment Arrangement [Abstract] |  |  |
Share-based compensation expense | $ 175.2 | $ 166.7 | $ 139.2
After tax | $ 155.4 | $ 145.9 | $ 120.4
Earnings per common share-diluted (in dollars per share) | $ 0.21 | $ 0.20 | $ 0.16

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- Definition The effect of share-based compensation expense on net income per common share-diluted + References No definition available. + Details
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Period Type: | duration

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- Definition Amount, after tax, of expense for award under share-based payment arrangement. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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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 https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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