Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 01, 2020	Dec. 31, 2019	Jun. 30, 2019
Business Acquisition [Line Items]
Goodwill	$ 4,452		$ 2,727	$ 2,725
F&G
Business Acquisition [Line Items]
Derivative instruments		$ 313
Mortgage loans		1,754
Investments in unconsolidated affiliates		1,019
Other long-term investments		430
Short-term investments		37
Trade and notes receivable		1
Reinsurance recoverable		3,241
Goodwill		1,725
Prepaid expenses and other assets		352
Lease assets		8
Other intangible assets		2,139
Assets of discontinued operations		2,392
Total assets acquired		36,728
Contractholder funds		26,454
Future policy benefits		4,106
Accounts payable and accrued liabilities		858
Notes payable		589
Funds withheld for reinsurance liabilities		816
Lease liabilities		9
Income taxes payable		(26)
Deferred tax liability		(254)
Liabilities of discontinued operations		2,268
Total liabilities assumed		34,820
Net assets acquired		1,908
F&G | Fixed maturity securities
Business Acquisition [Line Items]
Securities		22,389
F&G | Preferred securities
Business Acquisition [Line Items]
Securities		876
F&G | Equity securities
Business Acquisition [Line Items]
Securities		$ 52