Marketable Securities and Derivative Instruments: Derivative Instrument (Details) (JC Penney [Member], USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2011
Derivative [Line Items]
Investment Owned Balance Shares	23,400,000	23,400,000
Ownership Percentage	990.00%	990.00%
Acquisiton Price Per Share		$ 26.33
Unrealized Gain Loss On Securities		$ 192,079
Closing share price	$ 34.54	$ 34.54
Shares Owned [Member]
Derivative [Line Items]
Investment Owned Balance Shares	18,584,010	18,584,010
Acquisiton Price Per Share		$ 25.71
Investment Owned, at Cost	477,829	477,829
Unrealized Gain Loss On Securities		41,292
Investment Owned At Fair Value	641,892	641,892
Forward Contracts [Member]
Derivative [Line Items]
Unrealized Gain Loss On Securities	(6,762)	10,401
Derivative Number Of Instruments Held	4,815,990	4,815,990
Derivative Price Risk Option Strike Price	$ 28.72	$ 28.72
Derivative Maturity Date		Oct. 09, 2012
Notional Amount Of Price Risk Derivatives	$ 138,327	$ 138,327
Derivative Basis Spread On Variable Rate	80.00%	80.00%

The percentage points added to the reference rate to compute the variable rate on the interest rate derivative.

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The date the derivative matures.

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The number of derivative instruments of a particular group held by the entity.

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The strike price on the price risk option contract such as a put option or a call option.

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Cost of the investment.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Balance held at close of period in number of shares.

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Aggregate notional amount of price risk derivatives, which relates to the monetary amount specified in the price risk derivative instruments. Excludes notional amounts on derivatives expressed in nonmonetary units.

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Price-per-share of common or preferred stock issued or sold by the subsidiary or equity method investee.

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The increases or decreases in the market value of unsold securities whose gains or losses were included in earnings, and which, were not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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The average per share cost of acquisition for the security

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The percentage of ownership of common stock in the investment

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