Investments - Mortgage Loans, Net (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Mortgage loans		$ 24,148
Mortgage Loans	$ 30,811
Commercial Real Estate Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Mortgage loans	20,108	16,897
Financing Receivable, before Allowance for Credit Loss		17,064
Investment Owned, Balance, Principal Amount	21,851
Allowance for Loan and Lease Losses, Real Estate		(167)
Mark to fair value	(1,743)
Financing Receivable, Year One, Originated, Current Fiscal Year		6,055
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,852
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		4,129
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,731
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,042
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		1,255
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 1 to 29 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		16,922
Financing Receivable, Year One, Originated, Current Fiscal Year		6,003
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,852
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		4,129
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,731
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		952
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		1,255
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		142
Financing Receivable, Year One, Originated, Current Fiscal Year		52
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		90
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Mortgage Loans Excluding Loans Under Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss	21,061	16,565
Financing Receivable, Year One, Originated, Current Fiscal Year		5,808
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		1,738
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		4,054
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2,668
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		1,042
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		1,255
Commercial Real Estate Portfolio Segment [Member] \| Commercial Mortgage Loans Under Development [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss	790	499
Residential Mortgage [Member]
Loans and Leases Receivable Disclosure [Line Items]
Mortgage loans	10,703	7,251
Financing Receivable, before Allowance for Credit Loss	11,802	7,321
Allowance for Loan and Lease Losses, Real Estate		(70)
Mark to fair value	$ (1,099)
Financing Receivable, Year One, Originated, Current Fiscal Year		2,561
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		505
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		125
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		475
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		208
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		3,447
Residential Mortgage [Member] \| Financial Asset, 1 to 29 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		5,759
Financing Receivable, Year One, Originated, Current Fiscal Year		2,398
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		319
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		37
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		383
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		54
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		2,568
Residential Mortgage [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		372
Financing Receivable, Year One, Originated, Current Fiscal Year		100
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		37
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		3
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		6
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		223
Residential Mortgage [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		200
Financing Receivable, Year One, Originated, Current Fiscal Year		36
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		16
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		3
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		2
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		136
Residential Mortgage [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		990
Financing Receivable, Year One, Originated, Current Fiscal Year		27
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year		133
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year		82
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year		87
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year		141
Financing Receivable, Originated, More than Five Years before Current Fiscal Year		520
Residential Mortgage [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due \| Loans Insured or Guaranteed by US Government Authorities
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, before Allowance for Credit Loss		$ 856

Mortgage Loans

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The reserve to cover probable credit losses related to specifically identified fixed maturity real estate loans as well as probable credit losses inherent in the remainder of that loan portfolio.

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Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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