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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Accounts receivable, allowance for doubtful accounts	$ 13.9	$ 13.9
Intangible assets, accumulated amortization	$ 1,164.0	$ 1,246.3
Limited partners:
Capital account, units outstanding (in units)	2,003,173,384	1,937,324,817

X

- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef



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-Name Accounting Standards Codification



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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



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The number of limited partner units outstanding.

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-Section S99



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