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FINANCIAL INSTRUMENTS - Financial Assets and Liabilities (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Cash and cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | $ 2,084 | $ 393
Collateral pledged | 59 |
Cash and cash equivalents | Cash |  |
Disclosure of financial assets [line items] |  |
Financial assets | 685 | 320
Cash and cash equivalents | Cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,399 | 73
Derivatives |  |
Disclosure of financial assets [line items] |  |
Financial assets | 24 | 146
Financial liabilities | (29) | (1)
Derivatives | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (9) |
Derivatives | Interest rate swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities |  | (1)
Derivatives | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (20) |
Derivatives | FVTPL |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (29) | (1)
Derivatives | FVTPL | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (9) |
Derivatives | FVTPL | Interest rate swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities |  | (1)
Derivatives | FVTPL | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (20) |
Derivatives | AFS |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 | 0
Derivatives | AFS | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Derivatives | AFS | Interest rate swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities |  | 0
Derivatives | AFS | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Derivatives | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 | 0
Derivatives | Amortized Cost | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Derivatives | Amortized Cost | Interest rate swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities |  | 0
Derivatives | Amortized Cost | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Derivatives | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial assets | 6 | 10
Derivatives | Bond futures |  |
Disclosure of financial assets [line items] |  |
Financial assets |  | 9
Derivatives | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1 |
Derivatives | Options |  |
Disclosure of financial assets [line items] |  |
Financial assets | 17 | 127
Investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 27,050 | 4,943
Bonds |  |
Disclosure of financial assets [line items] |  |
Financial assets | 18,877 | 3,764
Bonds | Government and Municipal |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,404 | 1,664
Bonds | Corporate |  |
Disclosure of financial assets [line items] |  |
Financial assets | 15,303 | 1,724
Bonds | Asset-backed securities |  |
Disclosure of financial assets [line items] |  |
Financial assets | 948 | 168
Bonds | Private debt |  |
Disclosure of financial assets [line items] |  |
Financial assets | 222 | 208
Equity |  |
Disclosure of financial assets [line items] |  |
Financial assets | 919 | 540
Equity | Common shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 538 | 275
Equity | Preferred shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 84 | 18
Equity | Private equity and other |  |
Disclosure of financial assets [line items] |  |
Financial assets | 297 | 247
Loans and receivables |  |
Disclosure of financial assets [line items] |  |
Financial assets | 6,446 | 639
Loans and receivables | Mortgage loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 5,523 | 23
Loans and receivables | Private loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 551 | 616
Loans and receivables | Other loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 372 |
Short term investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 655 |
Short term investments | Commercial paper |  |
Disclosure of financial assets [line items] |  |
Financial assets | 655 |
Separately managed accounts |  |
Disclosure of financial assets [line items] |  |
Financial assets | 118 |
Other invested assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 35 |
Investment properties |  |
Disclosure of financial assets [line items] |  |
Financial assets | 545 |
Separate account assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,059 |
Reinsurance funds withheld |  |
Disclosure of financial assets [line items] |  |
Financial assets | 4,861 | 4,650
Funds withheld liabilities |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (10) | (12)
Funds withheld liabilities | FVTPL |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (10) | (12)
Funds withheld liabilities | AFS |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 | 0
Funds withheld liabilities | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 | 0
Separate account liabilities |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (1,059) |
Separate account liabilities | FVTPL |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Separate account liabilities | AFS |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (1,059) |
Separate account liabilities | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Notes payable |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (159) |
Notes payable | FVTPL |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Notes payable | AFS |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | 0 |
Notes payable | Amortized Cost |  |
Disclosure of financial assets [line items] |  |
Financial liabilities | (159) |
FVTPL | Cash and cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Cash and cash equivalents | Cash |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Cash and cash equivalents | Cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Derivatives |  |
Disclosure of financial assets [line items] |  |
Financial assets | 24 | 146
FVTPL | Derivatives | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial assets | 6 | 10
FVTPL | Derivatives | Bond futures |  |
Disclosure of financial assets [line items] |  |
Financial assets |  | 9
FVTPL | Derivatives | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1 |
FVTPL | Derivatives | Options |  |
Disclosure of financial assets [line items] |  |
Financial assets | 17 | 127
FVTPL | Investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,438 | 1,967
FVTPL | Bonds |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,424 | 1,963
FVTPL | Bonds | Government and Municipal |  |
Disclosure of financial assets [line items] |  |
Financial assets | 362 | 377
FVTPL | Bonds | Corporate |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,834 | 1,471
FVTPL | Bonds | Asset-backed securities |  |
Disclosure of financial assets [line items] |  |
Financial assets | 228 | 115
FVTPL | Bonds | Private debt |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Equity |  |
Disclosure of financial assets [line items] |  |
Financial assets | 14 | 4
FVTPL | Equity | Common shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Equity | Preferred shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 14 | 4
FVTPL | Equity | Private equity and other |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Loans and receivables |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Loans and receivables | Mortgage loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Loans and receivables | Private loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
FVTPL | Loans and receivables | Other loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Short term investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Short term investments | Commercial paper |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Separately managed accounts |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Other invested assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Investment properties |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Separate account assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
FVTPL | Reinsurance funds withheld |  |
Disclosure of financial assets [line items] |  |
Financial assets | 4,861 | 4,650
AFS | Cash and cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Cash and cash equivalents | Cash |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Cash and cash equivalents | Cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Derivatives |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Derivatives | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Derivatives | Bond futures |  |
Disclosure of financial assets [line items] |  |
Financial assets |  | 0
AFS | Derivatives | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
AFS | Derivatives | Options |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 17,482 | 2,337
AFS | Bonds |  |
Disclosure of financial assets [line items] |  |
Financial assets | 16,440 | 1,801
AFS | Bonds | Government and Municipal |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,042 | 1,287
AFS | Bonds | Corporate |  |
Disclosure of financial assets [line items] |  |
Financial assets | 13,469 | 253
AFS | Bonds | Asset-backed securities |  |
Disclosure of financial assets [line items] |  |
Financial assets | 720 | 53
AFS | Bonds | Private debt |  |
Disclosure of financial assets [line items] |  |
Financial assets | 209 | 208
AFS | Equity |  |
Disclosure of financial assets [line items] |  |
Financial assets | 905 | 536
AFS | Equity | Common shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 538 | 275
AFS | Equity | Preferred shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 70 | 14
AFS | Equity | Private equity and other |  |
Disclosure of financial assets [line items] |  |
Financial assets | 297 | 247
AFS | Loans and receivables |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Loans and receivables | Mortgage loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Loans and receivables | Private loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
AFS | Loans and receivables | Other loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
AFS | Short term investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
AFS | Short term investments | Commercial paper |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
AFS | Separately managed accounts |  |
Disclosure of financial assets [line items] |  |
Financial assets | 118 |
AFS | Other invested assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 19 |
AFS | Investment properties |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
AFS | Separate account assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,059 |
AFS | Reinsurance funds withheld |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Cash and cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 2,084 | 393
Amortized Cost | Cash and cash equivalents | Cash |  |
Disclosure of financial assets [line items] |  |
Financial assets | 685 | 320
Amortized Cost | Cash and cash equivalents | Cash equivalents |  |
Disclosure of financial assets [line items] |  |
Financial assets | 1,399 | 73
Amortized Cost | Derivatives |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Derivatives | Foreign exchange forwards |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Derivatives | Bond futures |  |
Disclosure of financial assets [line items] |  |
Financial assets |  | 0
Amortized Cost | Derivatives | Cross currency swaps |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
Amortized Cost | Derivatives | Options |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 7,130 | 639
Amortized Cost | Bonds |  |
Disclosure of financial assets [line items] |  |
Financial assets | 13 | 0
Amortized Cost | Bonds | Government and Municipal |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Bonds | Corporate |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Bonds | Asset-backed securities |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Bonds | Private debt |  |
Disclosure of financial assets [line items] |  |
Financial assets | 13 | 0
Amortized Cost | Equity |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Equity | Common shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Equity | Preferred shares |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Equity | Private equity and other |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 | 0
Amortized Cost | Loans and receivables |  |
Disclosure of financial assets [line items] |  |
Financial assets | 6,446 | 639
Amortized Cost | Loans and receivables | Mortgage loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 5,523 | 23
Amortized Cost | Loans and receivables | Private loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 551 | 616
Amortized Cost | Loans and receivables | Other loans |  |
Disclosure of financial assets [line items] |  |
Financial assets | 372 |
Amortized Cost | Short term investments |  |
Disclosure of financial assets [line items] |  |
Financial assets | 655 |
Amortized Cost | Short term investments | Commercial paper |  |
Disclosure of financial assets [line items] |  |
Financial assets | 655 |
Amortized Cost | Separately managed accounts |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
Amortized Cost | Other invested assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 16 |
Amortized Cost | Investment properties |  |
Disclosure of financial assets [line items] |  |
Financial assets | 545 |
Amortized Cost | Separate account assets |  |
Disclosure of financial assets [line items] |  |
Financial assets | 0 |
Amortized Cost | Reinsurance funds withheld |  |
Disclosure of financial assets [line items] |  |
Financial assets | $ 0 | $ 0

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