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Acquisitions and Dispositions - Assets and liabilities recognized in acquisition (Details) - USD ($) $ in Millions | Mar. 31, 2022 | Dec. 31, 2021 | Jan. 04, 2021
--- | --- | --- | ---
Assets |  |  |
Goodwill | $ 3,497 | $ 3,502 |
National General Holdings Corp. |  |  |
Assets |  |  |
Investments |  |  | $ 4,962
Cash |  |  | 400
Premiums and other receivables, net |  |  | 1,539
Deferred acquisition costs (value of business acquired) |  |  | 317
Reinsurance recoverables, net |  |  | 1,212
Intangible assets |  |  | 1,199
Other assets |  |  | 734
Goodwill |  |  | 1,038
Total assets |  |  | 11,401
Liabilities |  |  |
Reserve for property and casualty insurance claims and claims expense |  |  | 2,765
Reserve for future policy benefits |  |  | 186
Unearned premiums |  |  | 2,245
Reinsurance payable |  |  | 363
Debt |  |  | 593
Deferred tax liabilities |  |  | 162
Other liabilities |  |  | 776
Total liabilities |  |  | $ 7,090

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