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Pension and Other Postretirement Healthcare Benefits - Defined Contribution Plans (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jan. 01, 2013 | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2006
South Africa Defined Contribution Plans |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Compensation expense |  | $ 8 | $ 8 | $ 8 |
South Africa Defined Contribution Plans | Minimum |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Percentage contribution of employees' predefined pre-tax pensionable earnings |  | 10.00% |  |  |
South Africa Defined Contribution Plans | Maximum |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Percentage contribution of employees' predefined pre-tax pensionable earnings |  | 15.00% |  |  |
Qualified Plan | U.S. Savings Investment Plan |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Employer matching contribution percentage, first portion |  | 100.00% |  |  |
Employee contribution percentage, first portion |  | 6.00% |  |  |
Discretionary contribution percentage | 6.00% | 6.00% | 6.00% | 6.00% |
Discretionary contribution vesting period |  | 3 years |  |  |
Compensation expenses associated with matching contribution |  | $ 5 | $ 5 | $ 4 |
Compensation expense associated with discretionary contribution |  | 5 | 4 | 5 |
Nonqualified Plan | U.S. Benefit Restoration Plan |  |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |  |
Compensation expenses associated with matching contribution |  | $ 1 | $ 1 | $ 1 |
Maximum annual contributions per employee, percent |  |  |  |  | 20.00%

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- Definition Refers to defined contribution plan employer discretionary contribution vesting period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Amount of matching contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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