XML 104 R75.htm IDEA: XBRL DOCUMENT v3.22.4
Invested Assets and Investment Income - Summary of Invested Assets and Segregated Funds Net Assets, Measured at Fair Value (Parenthetical) (Detail)
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Bottom of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Investment properties capitalization rates 2.25% 2.25%
Investment properties terminal capitalization rates 3.25% 3.25%
Bottom of range [Member] | Real estate 1 [member]    
Disclosure of fair value measurement of assets [Line Items]    
Investment property discount rates 3.30% 3.80%
Top of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Investment properties capitalization rates 9.00% 9.00%
Investment properties terminal capitalization rates 9.50% 9.25%
Top of range [Member] | Real estate 1 [member]    
Disclosure of fair value measurement of assets [Line Items]    
Investment property discount rates 11.00% 10.50%
Power and infrastructure [Member] | Bottom of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Other invested assets fair value discount rate 7.15% 7.25%
Power and infrastructure [Member] | Top of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Other invested assets fair value discount rate 15.60% 20.00%
Timberland Investment [Member] | Bottom of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Other invested assets fair value discount rate 4.25% 4.50%
Timberland Investment [Member] | Top of range [Member]    
Disclosure of fair value measurement of assets [Line Items]    
Other invested assets fair value discount rate 7.00% 7.00%