Stock Plans: (Grant Date Fair Value and Compensation Expense for Restricted Share Unit Awards (Details) - Restricted Stock Units (RSUs) - USD ($) $ / shares in Units, $ in Millions |
12 Months Ended | ||
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Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Total Grant Date Fair Value of RSU Awards Granted | $ 181 | $ 179 | $ 174 |
| Weighted-Average Grant Date Fair Value Per RSU Award Granted (in dollars per share) | $ 89.71 | $ 101.96 | $ 104.75 |
| Compensation Expense related to RSU Awards | $ 157 | $ 153 | $ 135 |
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Equity Instrument Other Than Options Grants In Period Total Value No definition available.
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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