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Stock Compensation Plans - RSU, PRS and Cash RSU Activity (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
RSU's [Member] |  |  |
Number of Shares |  |  |
Beginning balance (in shares) | 1,367,000 |  |
Granted (in shares) | 1,026,000 |  |
Vested (in shares) | (513,000) |  |
Forfeited (in shares) | (85,000) |  |
Change due to performance conditions, net (in shares) | (10,000) |  |
Ending balance (in shares) | 1,785,000 | 1,367,000 |
Weighted Average Grant Date Fair Value Per Share |  |  |
Beginning balance (in dollars per share) | $ 101.50 |  |
Granted (in dollars per share) | 79.95 |  |
Vested (in dollars per share) | 106.97 |  |
Forfeited (in dollars per share) | 90.93 |  |
Change due to performance conditions, net (in dollars per share) | 125.82 |  |
Ending balance (in dollars per share) | $ 87.75 | $ 101.50 |
Cash RSU's [Member] |  |  |
Number of Shares |  |  |
Beginning balance (in shares) | 91,000 |  |
Granted (in shares) | 12,000 |  |
Vested (in shares) | (44,000) |  |
Forfeited (in shares) | (2,000) |  |
Ending balance (in shares) | 57,000 | 91,000 |
Weighted Average Grant Date Fair Value Per Share |  |  |
Beginning balance (in dollars per share) | $ 80.97 |  |
Granted (in dollars per share) | 84.55 |  |
Vested (in dollars per share) | 84.71 |  |
Forfeited (in dollars per share) | 83.06 |  |
Ending balance (in dollars per share) | $ 84.55 | $ 80.97 |
Purchased Restricted Stock Unit |  |  |
Number of Shares |  |  |
Beginning balance (in shares) | 61,000 |  |
Granted (in shares) | 0 |  |
Vested (in shares) | (25,000) |  |
Forfeited (in shares) | (3,000) |  |
Ending balance (in shares) | 33,000 | 61,000 |
Weighted Average Grant Date Fair Value Per Share |  |  |
Beginning balance (in dollars per share) | $ 133.96 |  |
Granted (in dollars per share) | 0 |  |
Vested (in dollars per share) | 144.67 |  |
Forfeited (in dollars per share) | 127.41 |  |
Ending balance (in dollars per share) | $ 126.49 | $ 133.96 |
Issued Shares (in shares) | 0 | 0 | 43,690
Aggregate purchase price (in dollars per share) | $ 0 | $ 0 | $ 6
Covered shares (in shares) | 0 | 0 | 21,845

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- Definition Aggregate number of nonvested shares effectively purchased by employees for share based compensation arrangement by share based payment award equity instruments other than option grants in period. + References No definition available. + Details
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- Definition Aggregate employee purchase price for share based compensation arrangement by share based payment award equity instruments other than option grants in period. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + 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)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options. + 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)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + 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)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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