Fair Value of Assets and Liabilities (Level 3 by Pricing Source) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other long-term investments	$ 1,596		$ 119,683
Reinsurance recoverable	11,400		1,287,157
Subtotal excluding separate account assets	6,080,731		8,174,467
Separate account assets	100,402,349	[1]	80,887,276	[1]
Total assets	106,483,080		89,061,743
Future policy benefits	(348,399)		1,417,891	[2]
Total liabilities	185,285		1,417,891
Short-term investments	18
Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Receivables from parents and affiliates	174,882		186,123
Fair Value, Inputs, Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Other long-term investments	1,168		988
Reinsurance recoverable	11,400		1,287,157
Receivables from parents and affiliates			1,995
Subtotal excluding separate account assets	119,234		1,440,614
Separate account assets	279,842	[1]	248,255	[1]
Total assets	399,076		1,688,869
Future policy benefits	(348,399)	[2]	1,417,891	[2]
Total liabilities	39,869		1,417,891
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	3,300		4,766
Other long-term investments	1,168		988
Reinsurance recoverable	11,400		1,287,157
Receivables from parents and affiliates	4,121		1,995
Subtotal excluding separate account assets	119,234		1,440,614
Total assets	399,076		1,688,869
Future policy benefits	(348,399)		1,417,891
Other Liabilities	388,268
Total liabilities	39,869		1,417,891
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Separate Accounts Asset [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Separate account assets	279,842		248,255
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Internal Pricing [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	569	[3]	1,489	[3]
Other long-term investments	0	[3]	232	[3]
Reinsurance recoverable	11,400	[3]	1,287,157	[3]
Receivables from parents and affiliates	0	[3]	0	[3]
Subtotal excluding separate account assets	27,442	[3]	1,326,163	[3]
Total assets	109,237	[3]	1,403,449	[3]
Future policy benefits	(348,399)	[3]	1,417,891	[3]
Other Liabilities	388,268	[3]
Total liabilities	39,869	[3]	1,417,891	[3]
Short-term investments	18	[3]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | Internal Pricing [Member] | Separate Accounts Asset [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Separate account assets	81,795	[3]	77,286	[3]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | External Priced [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Equity Securities	2,731	[4]	3,277	[4]
Other long-term investments	1,168	[4]	756	[4]
Reinsurance recoverable	0	[4]	0	[4]
Receivables from parents and affiliates	4,121	[4]	1,995	[4]
Subtotal excluding separate account assets	91,792	[4]	114,451	[4]
Total assets	289,839	[4]	285,420	[4]
Future policy benefits	0	[4]	0	[4]
Other Liabilities	0	[4]
Total liabilities	0	[4]	0	[4]
Short-term investments	0	[4]
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Recurring [Member] | External Priced [Member] | Separate Accounts Asset [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Separate account assets	198,047	[4]	170,969	[4]
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	18,293		36,981
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Internal Pricing [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	15,100	[3]	31,356	[3]
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | External Priced [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	3,193	[4]	5,625	[4]
Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	80,934		108,727
Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Internal Pricing [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	355	[3]	5,929	[3]
Fair Value, Inputs, Level 3 [Member] | Asset-backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | External Priced [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Marketable Securities, Fixed Maturities	$ 80,579	[4]	$ 102,798	[4]

[1] (2) Separate account assets represent segregated funds that are invested for certain customers. Investment risks associated with market value changes are borne by the customers, except to the extent of minimum guarantees made by the Company with respect to certain accounts. Separate account assets classified as Level 3 consist primarily of real estate and real estate investment funds. Separate account liabilities are not included in the above table as they are reported at contract value and not fair value in the Company’s Consolidated Statements of Financial Position.

[2] (4) For the year ended December 31, 2013, the net embedded derivative asset position of $348 million includes $1,228 million of embedded derivatives in an asset position and $880 million of embedded derivatives in a liability position. For the year ended December 31, 2012, the net embedded derivative liability position of $1,418 million includes $431 million of embedded derivatives in an asset position and $1,849 million of embedded derivatives in a liability position.

[3] (1) Represents valuations which could incorporate internally-derived and market inputs. See below for additional information related to internally developed valuation for significant items in the above table.

[4] (2) Represents unadjusted prices from independent pricing services and independent non-binding broker quotes where pricing inputs are not readily available.