Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2015

The following table presents our intangible assets as of December 31:


	2015					2014
(Amounts in millions)	Gross carrying amount		Accumulated amortization			Gross carrying amount		Accumulated amortization
PVFP	$	2,084	$	(1,941	)	$	1,995	$	(1,917	)
Capitalized software		665		(571	)		641		(532	)
Deferred sales inducements to contractholders		268		(178	)		209		(153	)
Other		66		(50	)		55		(49	)

Total	$	3,083	$	(2,740	)	$	2,900	$	(2,651	)

Activity in Present Value of Future Profits

The following table presents the activity in PVFP as of and for the years ended December 31:


(Amounts in millions)	2015			2014			2013
Unamortized balance as of January 1	$	229		$	246		$	297
Interest accreted at 6.45%, 5.89% and 5.52%		14			14			15
Amortization		(38	)		(31	)		(66	)

Unamortized balance as of December 31		205			229			246
Accumulated effect of net unrealized investment (gains) losses		(62	)		(151	)		(85	)

Balance as of December 31	$	143		$	78		$	161

Percentage of Current PVFP Balance Estimated to be Amortized

The percentage of the December 31, 2015 PVFP balance net of interest accretion, before the effect of unrealized investment gains or losses, estimated to be amortized over each of the next five years is as follows:


2016	15.1	%
2017	13.7	%
2018	11.7	%
2019	10.0	%
2020	8.7	%