Shareholder's Equity (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Amounts Reclassified from AOCI
Net investment income	$ 359	$ 377	$ 717	$ 754
Income tax provision	30	80	84	99
Net income	186	163	426	334
Net unrealized losses on Available-for-Sale securities
Amounts Reclassified from AOCI
Adjustments to AOCI for the impact to DAC, DSIC, benefit reserves and reinsurance recoverable on net unrealized securities gains, net of tax	201		265
Net unrealized losses on Available-for-Sale securities | Amount Reclassified from AOCI
Amounts Reclassified from AOCI
Net investment income			1
Income tax provision	1
Net income	1		1
Losses on cash flow hedges: | Amount Reclassified from AOCI
Amounts Reclassified from AOCI
Net investment income	2		4
Income tax provision			(1)
Net income	$ 2		$ 3