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Insurance Premiums (Unearned Premium Revenue Balance And Future Expected Premium Earnings) (Detail) (USD $) In Millions, unless otherwise specified | Dec. 31, 2012
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Insurance Premiums [Line Items] |
Three months ended, March 31, 2013, Total Expected Future Premium Earnings | $ 85
Three months ended, June 30, 2013, Total Expected Future Premium Earnings | 84
Three months ended, September 30, 2013, Total Expected Future Premium Earnings | 81
Three months ended, December 31, 2013, Total Expected Future Premium Earnings | 79
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 296
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 270
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 248
Twelve months ended, December 31, 2017, Total Expected Future Premium Earnings | 226
Five years ended, December 31, 2022, Total Expected Future Premium Earnings | 861
Five years ended, December 31, 2027, Total Expected Future Premium Earnings | 523
Five years ended, December 31, 2032 and thereafter, Total Expected Future Premium Earnings | 493
Total Expected Future Premium Earnings | 3,246
Unearned Premium Revenue [Member] |
Insurance Premiums [Line Items] |
Twelve months ended, December 31, 2012, Total Expected Future Premium Earnings | 2,938
Three months ended, March 31, 2013, Total Expected Future Premium Earnings | 2,860
Three months ended, June 30, 2013, Total Expected Future Premium Earnings | 2,783
Three months ended, September 30, 2013, Total Expected Future Premium Earnings | 2,709
Three months ended, December 31, 2013, Total Expected Future Premium Earnings | 2,637
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 2,368
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 2,123
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 1,898
Twelve months ended, December 31, 2017, Total Expected Future Premium Earnings | 1,693
Five years ended, December 31, 2022, Total Expected Future Premium Earnings | 915
Five years ended, December 31, 2027, Total Expected Future Premium Earnings | 442
Upfront [Member] |
Insurance Premiums [Line Items] |
Three months ended, March 31, 2013, Total Expected Future Premium Earnings | 46
Three months ended, June 30, 2013, Total Expected Future Premium Earnings | 46
Three months ended, September 30, 2013, Total Expected Future Premium Earnings | 44
Three months ended, December 31, 2013, Total Expected Future Premium Earnings | 42
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 159
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 143
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 130
Twelve months ended, December 31, 2017, Total Expected Future Premium Earnings | 120
Five years ended, December 31, 2022, Total Expected Future Premium Earnings | 456
Five years ended, December 31, 2027, Total Expected Future Premium Earnings | 268
Five years ended, December 31, 2032 and thereafter, Total Expected Future Premium Earnings | 234
Total Expected Future Premium Earnings | 1,688
Installments [Member] |
Insurance Premiums [Line Items] |
Three months ended, March 31, 2013, Total Expected Future Premium Earnings | 32
Three months ended, June 30, 2013, Total Expected Future Premium Earnings | 31
Three months ended, September 30, 2013, Total Expected Future Premium Earnings | 30
Three months ended, December 31, 2013, Total Expected Future Premium Earnings | 30
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 110
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 102
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 95
Twelve months ended, December 31, 2017, Total Expected Future Premium Earnings | 85
Five years ended, December 31, 2022, Total Expected Future Premium Earnings | 322
Five years ended, December 31, 2027, Total Expected Future Premium Earnings | 205
Five years ended, December 31, 2032 and thereafter, Total Expected Future Premium Earnings | 208
Total Expected Future Premium Earnings | 1,250
Accretion [Member] |
Insurance Premiums [Line Items] |
Three months ended, March 31, 2013, Total Expected Future Premium Earnings | 7
Three months ended, June 30, 2013, Total Expected Future Premium Earnings | 7
Three months ended, September 30, 2013, Total Expected Future Premium Earnings | 7
Three months ended, December 31, 2013, Total Expected Future Premium Earnings | 7
Twelve months ended, December 31, 2014, Total Expected Future Premium Earnings | 27
Twelve months ended, December 31, 2015, Total Expected Future Premium Earnings | 25
Twelve months ended, December 31, 2016, Total Expected Future Premium Earnings | 23
Twelve months ended, December 31, 2017, Total Expected Future Premium Earnings | 21
Five years ended, December 31, 2022, Total Expected Future Premium Earnings | 83
Five years ended, December 31, 2027, Total Expected Future Premium Earnings | 50
Five years ended, December 31, 2032 and thereafter, Total Expected Future Premium Earnings | 51
Total Expected Future Premium Earnings | $ 308

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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 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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