Statements Of Partners' Capital (Parenthetical) (USD $)	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Statements Of Partners' Capital [Abstract]
Cash distributions per limited partnership interest	$ 22.26	$ 25.39	$ 44.30

Cash distributions per limited partnership interest.

No definition available.

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Namespace Prefix:	cik-000082578_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration