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v3.22.2.2

Retirement Benefits (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Pension Benefits |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Contributions by employer |  | $ 28 | $ 33 | $ 141 | $ 90
Estimated future employer contributions in current fiscal year |  | 28 |  | 28 |
United States |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined contribution plan, cost recognized |  | 39 | 37 | 122 | 115
United Kingdom |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined contribution plan, cost recognized |  | $ 31 | $ 33 | $ 108 | $ 106
United Kingdom | Non-U.S. Plans | Geographic Concentration Risk |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Concentration risk percentage | 81.00% |  |  |  |
Equity Funds | United States |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Target asset allocation, percentage |  | 60.00% |  | 60.00% |
Actual asset allocation percentage of equity |  | 61.00% |  | 61.00% |
Equity Funds | United Kingdom |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Target asset allocation, percentage |  | 14.00% |  | 14.00% |
Actual asset allocation percentage of equity |  | 17.00% |  | 17.00% |
Fixed Income Funds | United States |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Target asset allocation, percentage |  | 40.00% |  | 40.00% |
Actual asset allocation percentage of equity |  | 39.00% |  | 39.00% |
Fixed Income Funds | United Kingdom |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Target asset allocation, percentage |  | 86.00% |  | 86.00% |
Actual asset allocation percentage of equity |  | 83.00% |  | 83.00% |

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