Closed Block (Liabilities and Assets) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Closed Block Liabilities
Future policy benefits	$ 41,795	$ 42,076
Other policy-related balances	331	298
Policyholder dividends payable	477	456
Policyholder dividend obligation	2,986	1,771	3,828
Current income tax payable	18	18
Other liabilities	641	582
Total closed block liabilities	46,248	45,201
Assets Designated to the Closed Block
Fixed maturity securities available-for-sale, at estimated fair value	29,295	28,374
Equity securities available-for-sale, at estimated fair value	90	86
Mortgage loans	6,031	6,155
Policy loans	4,651	4,669
Real estate and real estate joint ventures	543	492
Other invested assets	997	814
Total investments	41,607	40,590
Cash and cash equivalents	311	238
Accrued investment income	495	477
Premiums, reinsurance and other receivables	95	98
Deferred income tax assets	294	293
Total assets designated to the closed block	42,802	41,696
Excess of closed block liabilities over assets designated to the closed block	3,446	3,505
Amounts included in accumulated other comprehensive income (loss) (“AOCI”)
Unrealized investment gains (losses), net of income tax	2,254	1,502
Unrealized gains (losses) on derivatives, net of income tax	(5)	(3)
Allocated to policyholder dividend obligation, net of income tax	(1,941)	(1,151)
Total amounts included in AOCI	308	348
Maximum future earnings to be recognized from closed block assets and liabilities	$ 3,754	$ 3,853