Accumulated Other Comprehensive Income Level 1 (Notes)

12 Months Ended

Dec. 31, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Comprehensive Income (Loss) Note [Text Block]

Changes in AOCI, Net of Tax for the Period of June 1, 2018 to December 31, 2018 (Successor Company)
	Changes in
	Net Unrealized Gain on Securities			Net Gain on Cash Flow Hedging Instruments		Foreign Currency Translation Adjustments		AOCI, net of tax
Beginning balance	$	—		$	—	$	—	$	—
OCI before reclassifications	(198		)	—		2		(196		)
Amounts reclassified from AOCI	25			—		—		25
OCI, net of tax	(173		)	—		2		(171		)
Ending balance	$	(173	)	$	—	$	2	$	(171	)

Changes in AOCI, Net of Tax for the Period of January 1, 2018 to May 31, 2018 (Predecessor Company)
	Changes in
	Net Unrealized Gain on Securities			Net Gain on Cash Flow Hedging Instruments			Foreign Currency Translation Adjustments			AOCI, net of tax
Beginning balance	$	1,022		$	4		$	(3	)	$	1,023
Cumulative effect of accounting changes, net of tax [1]	182			—			—			182
Adjusted balance, beginning of period	1,204			4			(3		)	1,205
OCI before reclassifications	(432		)	(13		)	1			(444		)
Amounts reclassified from AOCI	2			(5		)	—			(3		)
OCI, net of tax	(430		)	(18		)	1			(447		)
Ending balance	$	774		$	(14	)	$	(2	)	$	758

[1] Includes reclassification to retained earnings of $193 of stranded tax effects and $11 of net unrealized gains, after tax, related to equity securities. Refer to Note 1 - Basis of Presentation and Significant Accounting Policies for further information.

Changes in AOCI, Net of Tax for the Year Ended December 31, 2017 (Predecessor Company)
	Changes in
	Net Unrealized Gain on Securities			Net Gain on Cash Flow Hedging Instruments			Foreign Currency Translation Adjustments			AOCI, net of tax
Beginning balance	$	693		$	32		$	(3	)	$	722
OCI before reclassifications	428			(5		)	—			423
Amounts reclassified from AOCI	(99		)	(23		)	—			(122		)
OCI, net of tax	329			(28		)	—			301
Ending balance	$	1,022		$	4		$	(3	)	$	1,023

Changes in AOCI, Net of Tax for the Year Ended December 31, 2016 (Predecessor Company)
	Changes in
	Net Unrealized Gain on Securities			Net Gain on Cash Flow Hedging Instruments			Foreign Currency Translation Adjustments			AOCI, net of tax
Beginning balance	$	539		$	57		$	(3	)	$	593
OCI before reclassifications	212			(9		)	—			203
Amounts reclassified from AOCI	(58		)	(16		)	—			(74		)
OCI, net of tax	154			(25		)	—			129
Ending balance	$	693		$	32		$	(3	)	$	722

Reclassification from AOCI
	Successor Company			Predecessor Company
	June 1, 2018 to December 31, 2018			January 1, 2018 to May 31, 2018			For the Year Ended December 31, 2017			For the Year Ended December 31, 2016			Affected Line Item in the Consolidated Statement of Operations
Net Unrealized Gain on Securities
Available-for-sale securities	$	(32	)	$	(2	)	$	153		$	89		Net realized capital gains (losses)
	(32		)	(2		)	153			89			Income before income taxes
	(7		)	—			54			31			Income tax expense
	$	(25	)	$	(2	)	$	99		$	58		Net income (loss)
Net Gains on Cash-Flow Hedging Instruments
Interest rate swaps	$	—		$	—		$	(1	)	$	1		Net realized capital gains (losses)
Interest rate swaps	—			8			26			25			Net investment income
Foreign currency swaps	—			(2		)	11			(2		)	Net realized capital gains (losses)
	—			6			36			24			Income before income taxes
	—			1			13			8			Income tax expense
	$	—		$	5		$	23		$	16		Net income (loss)
Total amounts reclassified from AOCI	$	(25	)	$	3		$	122		$	74		Net income (loss)