Long-term and Short-term Debt (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 11, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2020
Debt Instrument [Line Items]
Other Short-term Borrowings		$ 76	$ 241
Short-term Debt, Weighted Average Interest Rate, at Point in Time		5.23%	1.41%	2.01%
Debt Issuance Costs, Gross				$ 6
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net		$ 87	$ 82
Long Term Debt Aggregate Maturities, Year One		1,100
Long Term Debt Aggregate Maturities, Year Two		1,700
Long Term Debt Aggregate Maturities, Year Three		1,200
Long Term Debt Aggregate Maturities, Year Four		539
Long Term Debt Aggregate Maturities, Year Five		51
Long-term Debt, Maturities, Repayments of Principal after Year Five		10,000
Interest Expense, Debt		655	647	632
Senior notes
Debt Instrument [Line Items]
Debt Instrument, Principal Outstanding		$ 13,671	12,891
Debt Instrument, Interest Rate, Stated Percentage		5.70%
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net		$ 83	77
Other Notes MPEH [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 50							$ 75
Repayments of Long-term Debt	$ 75
Other Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Principal Outstanding		500	536
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net		3	$ 3
Senior Debt $500 Million 3.048% which matures in December 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.048%
Early Repayment of Senior Debt			$ 500
Redemption Premium			17
senior debt 1.0 billion July 2052
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 1,000
Debt Instrument, Interest Rate, Stated Percentage					5.00%
Debt Issuance Costs, Gross					$ 11
Securities Sold under Agreements to Repurchase [Member]
Debt Instrument [Line Items]
Other Short-term Borrowings		$ 76	$ 241
Parent Company [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.23%	212.00%			100.00%
Long Term Debt Aggregate Maturities, Year One		$ 1,300
Long Term Debt Aggregate Maturities, Year Two		1,400
Long Term Debt Aggregate Maturities, Year Three		1,200
Long Term Debt Aggregate Maturities, Year Four		508
Long Term Debt Aggregate Maturities, Year Five		0
Long-term Debt, Maturities, Repayments of Principal after Year Five		10,800
Interest Expense, Debt		829	$ 847	$ 833
Parent Company [Member] | Senior Notes Affiliated [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							182.00%
Committed Credit Facility Six [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount		2,487
Line of Credit Facility, Maximum Borrowing Capacity		2,896
Committed Credit Facility Six [Member] | Brighthouse Financial, Inc
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount		$ 2,500