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Taxation Taxation (Summary Of Income Tax Examinations) (Details) | 12 Months Ended
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Dec. 31, 2022
Earliest Tax Year [Member] | Switzerland |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2018 |
Earliest Tax Year [Member] | AUSTRALIA |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2016 |
Earliest Tax Year [Member] | CANADA |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2012 |
Earliest Tax Year [Member] | FRANCE |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2021 |
Earliest Tax Year [Member] | GERMANY |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2016 |
Earliest Tax Year [Member] | ITALY |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2019 |
Earliest Tax Year [Member] | MEXICO |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2016 |
Earliest Tax Year [Member] | SPAIN |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2012 |
Earliest Tax Year [Member] | UNITED KINGDOM |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2015 |
Earliest Tax Year [Member] | UNITED STATES |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2014 |
Earliest Tax Year [Member] | BRAZIL |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2016 |
Earliest Tax Year [Member] | KOREA, REPUBLIC OF |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2017 | [1]
Latest Tax Year [Member] | Switzerland |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | AUSTRALIA |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | CANADA |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | FRANCE |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | GERMANY |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | ITALY |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | MEXICO |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | SPAIN |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | UNITED KINGDOM |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | UNITED STATES |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | BRAZIL |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 |
Latest Tax Year [Member] | KOREA, REPUBLIC OF |  |
Income Tax Examination [Line Items] |  |
Open Tax Year | 2022 | [1]
[1] | Includes an examination for a pre-acquisition period subject to indemnification by Cigna Corp

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