Deferred Policy Acquisition Costs (Tables)

12 Months Ended

Dec. 31, 2018

Insurance [Abstract]

Deferred Policy Acquisition Costs

The following table summarizes changes in the DAC balance, as of the dates indicated:

	December 31,
(in millions)	2018			2017			2016
Balance at beginning of year	$	5,676		$	5,432		$	5,200
Capitalization of DAC		942			923			823
Amortization of DAC, excluding unlocks		(440	)		(461	)		(412	)
Amortization of DAC related to unlocks		17			69			(21	)
Adjustments to DAC related to unrealized gains and losses on available-for-sale securities		635			(287	)		(158	)
Balance at end of year	$	6,830		$	5,676		$	5,432