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Retirement Benefits (Narrative) (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) plan | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2022 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plan expenses | $ 84 | $ 83 | $ 63 |
Funded amount | 13 | 11 |  |
Employee deferred compensation plan | $ 64 | 64 |  |
United States |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 2 |  |  |
Accumulated benefit obligation | $ 74 | 80 |  |
United Kingdom |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 1 |  |  |
Germany |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 1 |  |  |
Int’l |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Accumulated benefit obligation | $ 2,100 | $ 2,300 |  |
Int’l | Scenario, Forecast |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Estimated employer contributions in next fiscal year |  |  |  | $ 46

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