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Investment Securities (Details 5) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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Mar. 31, 2012 | Mar. 31, 2012 Hedge and private equity funds included in other long-term investments | Dec. 31, 2011 Hedge and private equity funds included in other long-term investments | Mar. 31, 2012 Hedge funds entity | Dec. 31, 2011 Hedge funds | Mar. 31, 2012 Hedge funds 30-59 days notice | Mar. 31, 2012 Hedge funds 60-89 days notice | Mar. 31, 2012 Hedge funds 90-119 days notice | Mar. 31, 2012 Hedge funds 120+ days notice | Mar. 31, 2012 Hedge funds Monthly | Mar. 31, 2012 Hedge funds Monthly 120+ days notice | Mar. 31, 2012 Hedge funds Quarterly | Mar. 31, 2012 Hedge funds Quarterly 30-59 days notice | Mar. 31, 2012 Hedge funds Quarterly 60-89 days notice | Mar. 31, 2012 Hedge funds Quarterly 90-119 days notice | Mar. 31, 2012 Hedge funds Semi-annual | Mar. 31, 2012 Hedge funds Semi-annual 60-89 days notice | Mar. 31, 2012 Hedge funds Semi-annual 120+ days notice | Mar. 31, 2012 Hedge funds Annual | Mar. 31, 2012 Hedge funds Annual 30-59 days notice | Mar. 31, 2012 Hedge funds Annual 90-119 days notice | Mar. 31, 2012 Hedge funds Annual 120+ days notice | Mar. 31, 2012 Long/short equity | Dec. 31, 2011 Long/short equity | Mar. 31, 2012 Long/short credit & distressed | Dec. 31, 2011 Long/short credit & distressed | Mar. 31, 2012 Long diversified strategies | Dec. 31, 2011 Long diversified strategies | Mar. 31, 2012 Long/short equity REIT | Dec. 31, 2011 Long/short equity REIT | Mar. 31, 2012 Long/short equity activist | Dec. 31, 2011 Long/short equity activist | Mar. 31, 2012 Long bank loan | Dec. 31, 2011 Long bank loan | Mar. 31, 2012 Private equity funds entity | Dec. 31, 2011 Private equity funds | Mar. 31, 2012 Private equity funds 1-3 years | Mar. 31, 2012 Private equity funds 3-5 years | Mar. 31, 2012 Private equity funds 5-10 years | Mar. 31, 2012 Private equity funds >10 years | Mar. 31, 2012 Multi-sector | Dec. 31, 2011 Multi-sector | Mar. 31, 2012 Energy infrastructure and services | Dec. 31, 2011 Energy infrastructure and services | Mar. 31, 2012 Distressed residential real estate | Dec. 31, 2011 Distressed residential real estate | Mar. 31, 2012 Real estate | Dec. 31, 2011 Real estate | Mar. 31, 2012 Private equity secondaries | Dec. 31, 2011 Private equity secondaries | Mar. 31, 2012 International multi-sector, Europe | Dec. 31, 2011 International multi-sector, Europe | Mar. 31, 2012 Manufacturing/Industrial | Dec. 31, 2011 Manufacturing/Industrial | Mar. 31, 2012 Healthcare | Dec. 31, 2011 Healthcare | Mar. 31, 2012 International multi-sector, Asia | Dec. 31, 2011 International multi-sector, Asia | Mar. 31, 2012 Insurance | Dec. 31, 2011 Insurance | Mar. 31, 2012 Venture capital fund | Dec. 31, 2011 Venture capital fund
Other long-term investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of investments |  |  |  | 17 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Largest single fund investment |  | $ 24.4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other long-term investments |  | 259.3 | 254.2 | 131.4 | 125.3 | 44.5 | 37.2 | 28.5 | 21.2 | 6.6 | 6.6 | 79.8 | 27.6 | 31.8 | 20.4 | 19.6 | 5.4 | 14.2 | 25.4 | 16.9 | 8.1 | 0.4 | 52.8 | 48.8 | 33.6 | 32.3 | 16.9 | 16.9 | 14.2 | 14.5 | 13.5 | 12.3 | 0.4 | 0.5 | 127.9 | 128.9 | 38.2 | 15.4 | 67.8 | 6.5 | 28.3 | 26.9 | 26.4 | 28.0 | 24.4 | 27.4 | 12.2 | 9.5 | 10.9 | 11.3 | 6.5 | 7.8 | 6.5 | 6.2 | 3.5 | 2.3 | 3.3 | 3.6 | 3.3 | 3.5 | 2.6 | 2.4
Unfunded Commitments |  | 79.8 | 81.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 79.8 | 81.5 |  |  |  |  | 7.7 | 8.2 | 9.4 | 9.9 |  |  | 3.3 | 3.3 | 3.6 | 4.0 | 4.9 | 4.7 |  |  | 6.4 | 7.0 | 2.7 | 2.6 | 41.3 | 41.3 | 0.5 | 0.5
Distributions outstanding |  |  |  | 3.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption requests |  |  |  | 2.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum percentage of price difference provided by pricing services | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum price difference provided by pricing services | $ 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6925170&loc=SL6742756-110258 + Details
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- Definition Distributions pending from hedge funds that are no longer active and are in process of disposing their underlying investments. + References No definition available. + Details
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- Definition The amount of redemption requests submitted for investments for hedge funds. + References No definition available. + Details
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- Definition Represents the maximum price difference provided by the pricing services between the market price and the actual sale price of securities, on the basis of which outliers are considered. + References No definition available. + Details
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- Definition Represents the maximum percentage of price difference provided by the pricing services between the market price and the actual sale price of securities, on the basis of which outliers are considered. + References No definition available. + Details
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- Definition Number of investments held. + References No definition available. + Details
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- Details
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- Definition This element represents the total fair market value of investments in certain entities that calculate net asset value per share (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments). This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements, but may also be used in both the balance sheet and disclosure in the same submission. This item represents alternative investments as of the balance sheet date which may include investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds, and any other investment in which investee management calculates net asset value per share as the primary metric for investment value. + References No definition available. + Details
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- Definition The largest investment which the entity has made in a single fund. + References No definition available. + Details
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