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Liability For Unpaid Claims (Schedule Of Reconciliation) (Details) - USD ($) $ in Millions | Sep. 30, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Dec. 31, 2016
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Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |
Future contract benefits | $ 33,988 |  | $ 22,547 |
Liability for unpaid claims | 5,255 | $ 2,222 | 2,209 | $ 2,242
Life And Annuity Reserves And Claims Due [Member] |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |
Less adjustments | 27,193 |  | 18,698 |
Accident And Health Active Life Reserves [Member] |  |  |  |
Liability for Future Policy Benefit, by Product Segment [Line Items] |  |  |  |
Less adjustments | $ 1,540 |  | $ 1,640 |

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- Definition The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (cc) -URI http://asc.fasb.org/extlink&oid=99382578&loc=d3e14764-158437 + Details
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