Variable Interest Entities (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Gains (losses) for consolidated variable interest entities	$ 0	$ 0
Outstanding Principal Balance of Surplus Note Issued By LRCVV And Held By LFLLCI	613
Long-Term Senior Note Issued In Exchange For Corporate Bond Afs Security	275
Outstanding Principal Balance of Long-Term Senior Note Issued In Exchange For Corporate Bond AFS Security	925
Maxiumum Principal Balance of Long Term Senior Note Issued In Exchange For Corporate Bond AFS Security	1,100
Carrying amount of other investments	2,994	2,267
Limited Partnerships and Limited Liability Companies [Member]
Variable Interest Entity [Line Items]
Carrying amount of other investments	1,900	1,700
Carrying Amount Of Investments In Qualified Affordable Housing Projects	13	20
Income Tax Credits And Other Tax Benefits From Qualified Affordable Housing Projects	2	$ 1
Non-Affiliated VIE [Member]
Variable Interest Entity [Line Items]
Surplus notes	0
Maximum exposure to loss related to unconsolidated VIE's	0
Non-Affiliated VIE, Two [Member]
Variable Interest Entity [Line Items]
Outstanding Principal Balance of Long-Term Senior Note Issued In Exchange For Corporate Bond AFS Security	352
Maxiumum Principal Balance of Long Term Senior Note Issued In Exchange For Corporate Bond AFS Security	$ 500