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Stock Equivalent Units (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Equity Instruments Other than Options Activity [Roll Forward] |  |  |
Balance at January 1 (in shares) | 708,000 |  |
Granted (in shares) | 586,000 | 395,000 | 421,000
Dividend equivalents (in shares) | 38,000 |  |
Balance at December 31 (in shares) | 819,000 | 708,000 |
Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Balance at January 1, weighted average grant date fair value (in dollars per share) | $ 67.35 |  |
Granted, weighted average grant date fair value (in dollars per share) | 67.06 | $ 68.43 | $ 66.03
Dividend equivalents, weighted average grant date fair value (in dollars per share) | 67.65 |  |
Balance at December 31, weighted average grant date fair value (in dollars per share) | $ 67.36 | $ 67.35 |
Stock Equivalent Units [Member] |  |  |
Equity Instruments Other than Options Activity [Roll Forward] |  |  |
Balance at January 1 (in shares) | 597,000 |  |
Granted (in shares) | 38,000 | 29,000 | 31,000
Units distributed (in shares) | (134,000) |  |
Dividend equivalents (in shares) | 16,000 |  |
Balance at December 31 (in shares) | 517,000 | 597,000 |
Equity Instruments Other than Options, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Balance at January 1, weighted average grant date fair value (in dollars per share) | $ 41.75 |  |
Granted, weighted average grant date fair value (in dollars per share) | 63.12 | $ 71.97 | $ 68.15
Units distributed, weighted average grant date fair value (in dollars per share) | 33.90 |  |
Dividend equivalents, weighted average grant date fair value (in dollars per share) | 64.95 |  |
Balance at December 31, weighted average grant date fair value (in dollars per share) | $ 46.07 | $ 41.75 |
Equity Instruments Other than Options, Additional Disclosures [Abstract] |  |  |
Number of shares of common stock into which the share-based compensation can be converted (in shares) | 1 |  |

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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