|
Available-for-Sale Securities, at Fair Value Schedule of Realized Gain (Loss) (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Schedule of Available-for-sale Securities [Line Items] | |||
| Available-for-sale Securities, Gross Realized Gains (Losses), Sale Proceeds | $ 3,479,329us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds | $ 4,432,696us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds | $ 3,411,580us-gaap_AvailableForSaleSecuritiesGrossRealizedGainsLossesSaleProceeds |
| Available-for-sale Securities, Gross Realized Gains (Losses), Amortized Cost Sold | 3,394,914two_AvailableForSaleSecuritiesGrossRealizedGainsLossesAmortizedCostSold | 4,497,205two_AvailableForSaleSecuritiesGrossRealizedGainsLossesAmortizedCostSold | 3,298,689two_AvailableForSaleSecuritiesGrossRealizedGainsLossesAmortizedCostSold |
| Available-for-sale Securities, Gross Realized Gains | 162,235us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 202,112us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 115,750us-gaap_AvailableForSaleSecuritiesGrossRealizedGains |
| Available-for-sale Securities, Gross Realized Losses | (77,820)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (266,620)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (2,859)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses |
| Available-for-sale Securities, Gross Realized Gain (Loss) | $ 84,415us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet | $ (64,508)us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet | $ 112,891us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossNet |
| X | ||||||||||
|
- Definition
The total amount of amortized cost of securities, categorized neither as held-to-maturity nor trading securities, sold during the reporting period. No definition available.
|
| X | ||||||||||
|
- Definition
This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
The total amount of proceeds received for the sale of securities, categorized neither as held-to-maturity nor trading securities, during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|