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No definition available.

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- Definition

As of the balance sheet date, the aggregate estimated unrecognized future compensation costs for unvested 2007 Stock Incentive Plan shares.

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No definition available.

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- Definition

The maximum number of shares authorized to be granted and issued under the 2007 Stock Incentive Plan

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No definition available.

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Shares distributed under post employment provisions.

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- Definition

Number of shares granted to external directors under the 2007 Stock Incentive Plan.

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- Definition

Stock Incentive Plan Granted Shares Adjustment for prior year end

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No definition available.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost for defined contribution plan.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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- Definition

Percentage employer matches of the employee's percentage contribution matched.

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No definition available.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Description of service or performance condition required to be met for earning right to award under share-based payment arrangement. Includes, but is not limited to, combination of market, performance or service condition.

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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.

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Percentage of vesting of award under share-based payment arrangement.

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Employee Incentive Plans (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended			224 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	10.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	50.00%
Defined Contribution Plan Vesting Period	6 years
401(k) plan contribution expense	$ 8	$ 8	$ 7
Maximum shares of stock distributable under 2007 Stock Incentive Plan	160,000,000			160,000,000
Stock incentive plan granted shares adjustment	12,796
Shares granted to external directors				170,902
2007 Stock Incentive Plan Compensation Expense	$ 118	$ 112	$ 100
Estimated Future 2007 Stock Incentive Plan Compensation Expense	$ 39			$ 39
Post employment shares distribution				5,982,644
Director [Member] \| 2007 Stock Incentive Plan (Shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights, description	annual awards granted to all directors on December 31 of each year are fully vested and distributed immediately on grant date.
Vesting period	5 years
Employees [Member] \| 2007 Stock Incentive Plan (Shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights, description	In 2021, the Company’s Compensation Committee approved a change to the vesting schedule for the Stock Incentive Plan. For awards granted on December 31, 2021 onwards, restricted stock units vest and become distributable to participants 20% on each vesting date
Grants Prior To December 31, 2021 [Member] \| 2007 Stock Incentive Plan (Shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting rights, description	10% on the first vesting date, which is on or about May 9 of each year; and (b) an additional 15% on each of the following six anniversaries of the first vesting.
Share Based Compensation Award Tranche 1 [Member] \| 2007 Stock Incentive Plan (Shares)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage per year	20.00%