We provide products and services and report results through our Annuities, Retirement Plan Services, Life Insurance and Group Protection segments. As discussed in Note 3, we completed the acquisition of Liberty Life during the second quarter of 2018. Related results are included within the Group Protection segment. We also have Other Operations, which includes the financial data for operations that are not directly related to the business segments. Our reporting segments reflect the manner by which our chief operating decision makers view and manage the business. A discussion of these segments and Other Operations is found in Note 21 of our 2018 Form 10-K.

Segment operating revenues and income (loss) from operations are internal measures used by our management and Board of Directors to evaluate and assess the results of our segments. Income (loss) from operations is GAAP net income excluding the after-tax effects of the following items, as applicable:

Realized gains and losses associated with the following (“excluded realized gain (loss)”):

Changes in the fair value of derivatives, embedded derivatives within certain reinsurance arrangements and trading securities (“gain (loss) on the mark-to-market on certain instruments”);

Changes in the fair value of the embedded derivative liabilities related to index call options we may purchase in the future to hedge contract holder index allocations applicable to future reset periods for our indexed annuity products accounted for at fair value (“indexed annuity forward-starting option”); and

Income (loss) from reserve changes, net of related amortization, on business sold through reinsurance;

Income (loss) from the initial adoption of new accounting standards, regulations, and policy changes including the net impact from the Tax Cuts and Jobs Act.

Operating revenues represent GAAP revenues excluding the pre-tax effects of the following items, as applicable:

Amortization of DFEL arising from changes in GDB and GLB benefit ratio unlocking; and

Amortization of deferred gains arising from reserve changes on business sold through reinsurance.

The tables below reconcile our segment measures of performance to the GAAP measures presented in our Consolidated Statements of Comprehensive Income (Loss) (in millions):



	For the Three						For the Nine
	Months Ended						Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Revenues
Operating revenues:
Annuities	$	1,024		$	1,031		$	3,177		$	3,032
Retirement Plan Services		293			290			877			867
Life Insurance		1,995			1,647			5,264			4,770
Group Protection		1,136			1,128			3,429			2,617
Other Operations		47			50			152			158
Excluded realized gain (loss), pre-tax		(268	)		(107	)		(981	)		(149	)
Total revenues	$	4,227		$	4,039		$	11,918		$	11,295



	For the Three						For the Nine
	Months Ended						Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Net Income (Loss)
Income (loss) from operations:
Annuities	$	216		$	265		$	723		$	824
Retirement Plan Services		41			37			117			118
Life Insurance		(227	)		143			103			395
Group Protection		61			62			184			136
Other Operations		(50	)		(46	)		(119	)		(100	)
Excluded realized gain (loss), after-tax		(212	)		(84	)		(775	)		(118	)
Net impact from the Tax Cuts and Jobs Act		-			9			-			(4	)
Acquisition and integration costs related to mergers
and acquisitions, after-tax		(30	)		(8	)		(78	)		(47	)
Net income (loss)	$	(201	)	$	378		$	155		$	1,204