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Financial Instruments Investment Segment and Holding Company Narrative (Details) (Investment Segment [Member], USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2014 Investment Funds [Member] | Dec. 31, 2013 Investment Funds [Member] | Aug. 31, 2013 Holding Company [Member] | Aug. 31, 2013 Koala [Member] | Mar. 31, 2014 Total Return Swap [Member] Investment Funds [Member] | Dec. 31, 2013 Total Return Swap [Member] Investment Funds [Member] | Dec. 31, 2013 Put Option [Member] Investment Funds [Member]
Derivative [Line Items] |  |  |  |  |  |  |
Non-cash Investment segment contribution (derivative liability shares transferred) |  |  | 9.7 | 7.7 |  |  |
Non-cash investment segment contribution |  |  | $ 234 | $ 185 |  |  |
Maximum payout amounts relating to put options written | 302 | 8,000 |  |  |  |  |
Realized and unrealized gain (loss) on derivatives, net | 1 |  |  |  | 21 | 14 | 131
Fair value of derivative instruments with credit-risk related contingent features in a liability position | 820 | 639 |  |  |  |  |
Cash collateral posted for derivative positions | $ 634 | $ 255 |  |  |  |  |

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- Definition Non-cash Investment segment contribution (derivative liability shares transferred) + References No definition available. + Details
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- Definition The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624258-113959 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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