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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2020
Analysis Of Other Comprehensive Income By Item [Abstract] |
Schedule of changes in accumulated other comprehensive income (loss) | Changes in accumulated other comprehensive income (loss), net of taxes, are as follows:
| 2020 | 2019
For the years ended December 31, | Balance, beginning of period | Other comprehensiveincome (loss) | Balance, end of period | Balance, beginning of period | Other comprehensive income (loss) | Balance, end of period
Items that may be reclassified subsequently to income: |  |  |  |  |  |  |  |  |  |  |  |
Unrealized foreign currency translation gains (losses), net of hedging activities |  | $ | 1,359 |  |  | $ | (204) |  |  | $ | 1,155 |  |  | $ | 1,923 |  |  | $ | (564) |  |  | $ | 1,359 |
Unrealized gains (losses) on available-for-sale assets |  | 313 |  |  | 319 |  |  | 632 |  |  | (56) |  |  | 369 |  |  | 313 |
Unrealized gains (losses) on cash flow hedges |  | (7) |  |  | (6) |  |  | (13) |  |  | (21) |  |  | 14 |  |  | (7) |
Share of other comprehensive income (loss) in joint ventures and associates |  | (33) |  |  | (9) |  |  | (42) |  |  | (24) |  |  | (9) |  |  | (33) |
Items that will not be reclassified subsequently to income: |  |  |  |  |  |  |  |  |  |  |  |
Remeasurement of defined benefit plans |  | (305) |  |  | 22 |  |  | (283) |  |  | (263) |  |  | (42) |  |  | (305) |
Revaluation surplus on transfers to investment properties | 145 |  |  | — |  |  | 145 |  |  | 145 |  |  | — |  |  | 145 |
Total |  | $ | 1,472 |  |  | $ | 122 |  |  | $ | 1,594 |  |  | $ | 1,704 |  |  | $ | (232) |  |  | $ | 1,472 |
Total attributable to: |  |  |  |  |  |  |  |  |  |  |  |
Participating policyholders |  | $ | 11 |  |  | $ | (6) |  |  | $ | 5 |  |  | $ | 14 |  |  | $ | (3) |  |  | $ | 11 |
Shareholders |  | 1,461 |  |  | 128 |  |  | 1,589 |  |  | 1,690 |  |  | (229) |  |  | 1,461 |
Total |  | $ | 1,472 |  |  | $ | 122 |  |  | $ | 1,594 |  |  | $ | 1,704 |  |  | $ | (232) |  |  | $ | 1,472 |

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