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Insurance Premiums (Unearned Premium Revenue Balance And Future Expected Earnings) (Detail) $ in Millions | Dec. 31, 2016 USD ($)
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Insurance Premiums [Line Items] |
Three months ending, March 31, 2017, Total Expected Future Premium Earnings | $ 31
Three months ending, June 30, 2017, Total Expected Future Premium Earnings | 31
Three months ending, September 30, 2017, Total Expected Future Premium Earnings | 29
Three months ending, December 31, 2017, Total Expected Future Premium Earnings | 28
Twelve months ending, December 31, 2018, Total Expected Future Premium Earnings | 106
Twelve months ending, December 31, 2019, Total Expected Future Premium Earnings | 96
Twelve months ending, December 31, 2020, Total Expected Future Premium Earnings | 87
Twelve months ending, December 31, 2021, Total Expected Future Premium Earnings | 79
Five years ending, December 31, 2026, Total Expected Future Premium Earnings | 287
Five years ending, December 31, 2031, Total Expected Future Premium Earnings | 153
Five years ending, December 31, 2036 and thereafter, Total Expected Future Premium Earnings | 141
Total Expected Future Premium Earnings | 1,068
Unearned Premium Revenue [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 958
Unearned Premium Revenue [Member] | March Thirty One Two Thousand Seventeen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 930
Unearned Premium Revenue [Member] | June Thirty Two Thousand Seventeen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 902
Unearned Premium Revenue [Member] | September Thirty Two Thousand Seventeen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 876
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Seventeen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 850
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Eighteen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 754
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Nineteen [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 667
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Twenty [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 588
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Twenty One [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 516
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Twenty Six [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 258
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Thirty One [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 123
Unearned Premium Revenue [Member] | December Thirty One Two Thousand Thirty Six And Thereafter [Member] |
Insurance Premiums [Line Items] |
Unearned Premiums | 0
Upfront [Member] |
Insurance Premiums [Line Items] |
Three months ending, March 31, 2017, Total Expected Future Premium Earnings | 16
Three months ending, June 30, 2017, Total Expected Future Premium Earnings | 16
Three months ending, September 30, 2017, Total Expected Future Premium Earnings | 15
Three months ending, December 31, 2017, Total Expected Future Premium Earnings | 15
Twelve months ending, December 31, 2018, Total Expected Future Premium Earnings | 55
Twelve months ending, December 31, 2019, Total Expected Future Premium Earnings | 50
Twelve months ending, December 31, 2020, Total Expected Future Premium Earnings | 45
Twelve months ending, December 31, 2021, Total Expected Future Premium Earnings | 40
Five years ending, December 31, 2026, Total Expected Future Premium Earnings | 147
Five years ending, December 31, 2031, Total Expected Future Premium Earnings | 78
Five years ending, December 31, 2036 and thereafter, Total Expected Future Premium Earnings | 58
Total Expected Future Premium Earnings | 535
Installments [Member] |
Insurance Premiums [Line Items] |
Three months ending, March 31, 2017, Total Expected Future Premium Earnings | 12
Three months ending, June 30, 2017, Total Expected Future Premium Earnings | 12
Three months ending, September 30, 2017, Total Expected Future Premium Earnings | 11
Three months ending, December 31, 2017, Total Expected Future Premium Earnings | 11
Twelve months ending, December 31, 2018, Total Expected Future Premium Earnings | 41
Twelve months ending, December 31, 2019, Total Expected Future Premium Earnings | 37
Twelve months ending, December 31, 2020, Total Expected Future Premium Earnings | 34
Twelve months ending, December 31, 2021, Total Expected Future Premium Earnings | 32
Five years ending, December 31, 2026, Total Expected Future Premium Earnings | 111
Five years ending, December 31, 2031, Total Expected Future Premium Earnings | 57
Five years ending, December 31, 2036 and thereafter, Total Expected Future Premium Earnings | 65
Total Expected Future Premium Earnings | 423
Accretion [Member] |
Insurance Premiums [Line Items] |
Three months ending, March 31, 2017, Total Expected Future Premium Earnings | 3
Three months ending, June 30, 2017, Total Expected Future Premium Earnings | 3
Three months ending, September 30, 2017, Total Expected Future Premium Earnings | 3
Three months ending, December 31, 2017, Total Expected Future Premium Earnings | 2
Twelve months ending, December 31, 2018, Total Expected Future Premium Earnings | 10
Twelve months ending, December 31, 2019, Total Expected Future Premium Earnings | 9
Twelve months ending, December 31, 2020, Total Expected Future Premium Earnings | 8
Twelve months ending, December 31, 2021, Total Expected Future Premium Earnings | 7
Five years ending, December 31, 2026, Total Expected Future Premium Earnings | 29
Five years ending, December 31, 2031, Total Expected Future Premium Earnings | 18
Five years ending, December 31, 2036 and thereafter, Total Expected Future Premium Earnings | 18
Total Expected Future Premium Earnings | $ 110

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- Definition Financial guarantee insurance contracts, the amount of premium revenue expected to be recognized during the sixteenth year and thereafter following the statement of financial position reporting date. + References No definition available. + Details
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- Definition Financial guarantee insurance contracts, the amount of premium revenue expected to be recognized during the sixth through tenth year following the statement of financial position reporting date + References No definition available. + Details
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- Definition Amount of unearned premium revenue under contracts issued by an insurance entity that provide protection to the holder of a financial obligation from a financial loss in the event of a default. + References No definition available. + Details
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- Definition Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the next fiscal quarter following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 + Details
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- Definition Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the fourth fiscal quarter following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 + Details
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- Definition Amount of premium revenue under financial guarantee insurance contracts expected to be recognized in the second fiscal quarter following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=6933581&loc=SL5749298-161291 + Details
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