Reinsurance Retention Policy, Uncollected Charges And Fees Risk, Percentage

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Related Party Transaction, Term

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of investments, and noncurrent assets classified as other.

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The net realized gains or losses on investments during the period, not including gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

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Amount, after valuation allowance, recoverable under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, policy benefits and policy reserves. Excludes premiums paid under reinsurance contracts.

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Stated amount that is the upper retention limit per entity policy.

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Amount of risk reinsured in excess of stated retention per company policy.

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Percentage of risk reinsured in excess of stated retention per entity policy.

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Percentage of risk reinsured on insurance products per entity policy.

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Reinsurance (Narrative) (Details) - USD ($) $ in Thousands										3 Months Ended		9 Months Ended		21 Months Ended	36 Months Ended		48 Months Ended
Reinsurance (Narrative) (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jul. 01, 2017	Jun. 30, 2017	Jan. 01, 2017	Dec. 31, 2013	Jul. 01, 2011	Dec. 31, 2010	Dec. 31, 2009	Jan. 31, 2001	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2013	Dec. 31, 2017	Dec. 31, 2013
Effects of Reinsurance [Line Items]
Realized investment gains (losses)										$ (49,423)	$ (275,186)	$ (135,355)	$ (31,175)
Reinsurance recoverables										31,430,148		31,430,148					$ 32,521,264
PAR U
Effects of Reinsurance [Line Items]
Reinsurance recoverables										11,292,102		11,292,102					11,111,272
PURC
Effects of Reinsurance [Line Items]
Reinsurance recoverables										3,980,335		3,980,335					3,577,962
PARCC
Effects of Reinsurance [Line Items]
Reinsurance recoverables										2,503,689		2,503,689					2,546,673
GUL Re
Effects of Reinsurance [Line Items]
Reinsurance recoverables										1,975,365		1,975,365					1,772,950
PAR Term
Effects of Reinsurance [Line Items]
Reinsurance recoverables										1,700,457		1,700,457					1,559,618
Prudential of Taiwan
Effects of Reinsurance [Line Items]
Reinsurance recoverables										1,411,997		1,411,997					1,406,686
Term Re
Effects of Reinsurance [Line Items]
Reinsurance recoverables										1,187,127		1,187,127					966,509
Prudential Insurance
Effects of Reinsurance [Line Items]
Reinsurance recoverables										922,025		922,025					1,118,004
DART
Effects of Reinsurance [Line Items]
Reinsurance recoverables										79,061		79,061					$ 0
Union Hamilton Reinsurance, Ltd.
Effects of Reinsurance [Line Items]
Reinsurance recoverables										$ 3,200,000		$ 3,200,000
Union Hamilton Reinsurance, Ltd. \| Quote Share Reinsurance
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Amount Retained, Maximum														$ 2,900,000
Reinsurance Retention Policy, Reinsured Risk, Percentage														50.00%
Affiliated Entity \| PAR U
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage						95.00%	70.00%
Affiliated Entity \| PURC
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage															95.00%	70.00%
Affiliated Entity \| PARCC
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage								90.00%
Affiliated Entity \| GUL Re
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage				95.00%	30.00%
Affiliated Entity \| PAR Term
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage																		95.00%
Affiliated Entity \| Prudential of Taiwan
Effects of Reinsurance [Line Items]
Related Party Transaction, Term									2 years
Affiliated Entity \| Term Re
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage																	95.00%
Affiliated Entity \| Prudential Insurance
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage												100.00%
Affiliated Entity \| DART
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Reinsured Risk, Percentage	95.00%
Affiliated Entity \| UPARC
Effects of Reinsurance [Line Items]
Reinsurance Retention Policy, Excess Retention, Percentage			30.00%
Reinsurance Retention Policy, Excess Retention, Amount Reinsured			$ 1,000
Reinsurance Retention Policy, Amount Retained, Maximum			$ 1,000
Reinsurance Retention Policy, Reinsured Risk, Percentage			27.00%
Reinsurance Retention Policy, Uncollected Charges And Fees Risk, Percentage			30.00%
Affiliated Entity \| UPARC \| Impacts of Recapture
Effects of Reinsurance [Line Items]
Invested assets received		$ 557,000
Reinsurance recoverable		760,000
Realized investment gains (losses)		$ (203,000)