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Insurance In Force (Schedule Of Geographical Distribution Of Insurance In Force) (Details) (USD $) In Billions, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Insurance In Force [Line Items] |  |
Insurance in Force | $ 840.1 | $ 1,025.0
% of Insurance in Force | 100.00% | 100.00%
California [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 125.0 | 144.5
% of Insurance in Force | 14.90% | 14.10%
New York [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 62.3 | 73.4
% of Insurance in Force | 7.40% | 7.20%
Florida [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 47.9 | 58.0
% of Insurance in Force | 5.70% | 5.70%
Texas [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 41.7 | 49.7
% of Insurance in Force | 5.00% | 4.80%
Illinois [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 41.2 | 46.1
% of Insurance in Force | 4.90% | 4.50%
New Jersey [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 30.3 | 34.3
% of Insurance in Force | 3.60% | 3.40%
Washington [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 22.8 | 26.9
% of Insurance in Force | 2.70% | 2.60%
Michigan [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 21.1 | 24.3
% of Insurance in Force | 2.50% | 2.40%
Pennsylvania [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 18.5 | 24.8
% of Insurance in Force | 2.20% | 2.40%
Massachusetts [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 15.1 | 20.9
% of Insurance in Force | 1.80% | 2.00%
Sub-Total Insurance In Force [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 425.9 | 502.9
% of Insurance in Force | 50.70% | 49.10%
Nationally Diversified [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 102.4 | 147.7
% of Insurance in Force | 12.20% | 14.40%
Other States [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 224.2 | 268.5
% of Insurance in Force | 26.70% | 26.20%
United States [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 752.5 | 919.1
% of Insurance in Force | 89.60% | 89.70%
Internationally Diversified [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 28.9 | 36.9
% of Insurance in Force | 3.40% | 3.60%
Country Specific [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | 58.7 | 69.0
% of Insurance in Force | 7.00% | 6.70%
Non-United States [Member] |  |
Insurance In Force [Line Items] |  |
Insurance in Force | $ 87.6 | $ 105.9
% of Insurance in Force | 10.40% | 10.30%

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- Definition The amount as of the balance sheet date of the participating business in force. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 50 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6483535&loc=d3e16392-158451 + Details
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- Definition This percent places participating policies in the numerator and insurance contracts in force in the denominator. Participating insurance contracts allow policyholders to share in the experience of the entity, primarily through policy dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.14(b)(1)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 60 -Paragraph 60 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 7 -Section 03 -Paragraph 14 -Subparagraph b Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 50 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6483535&loc=d3e16392-158451 + Details
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