Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2023

Quarterly Financial Data [Abstract]

Schedule of quarterly financial information

The following table presents the effect of adoption of ASU 2018-12 on selected 2022 financial data.

	2022
(In millions, except per share data)	Q1		Q2		Q3		Q4		Full Year
Components of Income (Loss)
Core income (loss)
Prior to adoption	$	316	$	245	$	213	$	274	$	1,048
Effect of adoption	(18)		(15)		(170)		(9)		(212)
As reported	$	298	$	230	$	43	$	265	$	836
Net income (loss)
Prior to adoption	$	313	$	205	$	128	$	248	$	894
Effect of adoption	(18)		(15)		(170)		(9)		(212)
As reported	$	295	$	190	$	(42)	$	239	$	682
Other comprehensive income (loss), net of tax
Prior to adoption	$	(1,623)	$	(1,410)	$	(1,426)	$	582	$	(3,877)
Effect of adoption	603		627		586		(177)		1,639
As reported	$	(1,020)	$	(783)	$	(840)	$	405	$	(2,238)
Diluted Earnings (Loss) Per Common Share
Core income (loss)
Prior to adoption	$	1.16	$	0.90	$	0.78	$	1.01
Effect of adoption	(0.07)		(0.06)		(0.62)		(0.04)
As reported	$	1.09	$	0.84	$	0.16	$	0.97
Net income (loss)
Prior to adoption	$	1.15	$	0.75	$	0.47	$	0.91
Effect of adoption	(0.07)		(0.06)		(0.62)		(0.04)
As reported	$	1.08	$	0.69	$	(0.15)	$	0.87