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v3.19.3.a.u2

Retirement Benefits (Narrative) (Details) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) plan | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined contribution plan expenses | $ 63 | $ 56 | $ 52 |
Multi-employer plan contribution | 0 | 0 | $ 3 |
Funded amount | 10 | 8 |  |
Employee deferred compensation plan | $ 65 | 67 |  |
United States |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 2 |  |  |
Increase in projected benefit obligation | $ 0 | 0 |  |
Accumulated benefit obligation | $ 76 | 71 |  |
United Kingdom |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 1 |  |  |
Increase in prior service cost |  | 20 |  |
Increase in projected benefit obligation |  | 20 |  |
Germany |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Number of frozen defined benefit plans | plan | 1 |  |  |
Int’l |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Increase in projected benefit obligation | $ 0 | 20 |  |
Accumulated benefit obligation | $ 2,000 | $ 1,800 |  |
Scenario, Forecast | Int’l |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Estimated employer contributions in next fiscal year |  |  |  | $ 47

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