Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended			6 Months Ended	9 Months Ended
	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2023	Sep. 30, 2023
Cash flows from operating activities:
Net income (loss)	$ (83)	$ 51	$ 62	$ 113	$ 594
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Interest credited to policyholders’ account balances	262		23
Policy charges and fee income	(404)	(410)	(61)	(471)	(882)
Net derivative (gains) losses	1,055	699	(6)	693	1,029
Investment (gains) losses, net	1		5
Realized and unrealized (gains) losses on trading securities	0		2
Non-cash long-term incentive compensation expense	1		1
Amortization and depreciation	142		13
Remeasurement of liability for future policy benefits	(9)	(1)	(1)	(2)	21
Change in market risk benefits	(1,034)		1	(838)	(1,830)
Changes in:
Reinsurance recoverable	(43)		(9)
Funds withheld receivable	18		0	(161)	(219)
Capitalization of deferred policy acquisition costs	(163)		(76)
Future policy benefits	154		9	222	365
Current and deferred income taxes	(23)		(72)	(63)
Other, net	360		89	455	984
Net cash provided by (used in) operating activities	234		(20)	888	452
Proceeds from the sale/maturity/prepayment of:
Fixed maturities, available-for-sale	346		58
Short-term investments	2		0
Payment for the purchase/origination of:
Fixed maturities, available-for-sale	(1,818)		(963)
Mortgage loans on real estate	(254)		0
Trading account securities	0		(2)
Short-term investments	(5)		0
Other	(4)		0
Cash settlements related to derivative instruments, net	(101)		(96)
Other, net	(12)		(6)
Net cash provided by (used in) investing activities	(1,846)		(1,009)
Policyholders’ account balances:
Deposits	3,088		1,202
Withdrawals	(435)		(13)
Transfer (to) from Separate Accounts	27		(15)
Payments of market risk benefits	(190)		0
Change in collateralized pledged assets	2		0
Change in collateralized pledged liabilities	773		96
Changes in securities lending payable	21		0
Net cash provided by (used in) financing activities	3,286		1,270
Change in cash and cash equivalents	1,674		241
Cash and cash equivalents, beginning of period	1,838	$ 535	294	$ 294	$ 294
Cash and cash equivalents, end of period	$ 3,512		$ 535