Fair Value Measurements, Derivatives and Other Comprehensive Income (OCI) Fair Value Assets and Liabilities Measured on Recurring and Nonrecurring Basis Table (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]

The table below identifies the Partnership's assets and liabilities that were recorded at fair value at June 30, 2013 (in millions):

			Fair Value Measurements at June 30, 2013
	June 30, 2013		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total Gains (losses) for the three months ended June 30, 2013	Total Gains (losses) for the six months ended June 30, 2013
Recurring fair value measurements – Assets
Derivatives
Commodity contracts	$	3.2	$	—	$	3.2	$	—
Recurring fair value measurements – Liabilities
Derivatives
Commodity contracts	$	0.9	$	—	$	0.9	$	—

The table below identifies the Partnership's assets and liabilities that were recorded at fair value at December 31, 2012 (in millions):

			Fair Value Measurements at December 31, 2012
	December 31, 2012		Quoted prices in active markets for identical assets (Level 1)		Significant other observable inputs (Level 2)		Significant unobservable inputs (Level 3)		Total Gains (losses) for the three months ended June 30, 2012				Total Gains (losses) for the six months ended June 30, 2012
Recurring fair value measurements – Assets
Derivatives
Commodity contracts	$	0.1	$	—	$	0.1	$	—
Recurring fair value measurements – Liabilities
Derivatives
Commodity contracts	$	0.1	$	—	$	0.1	$	—
Nonrecurring fair value measurements – Assets
Assets to be abandoned	$	—	$	—	$	—	$	—	$	(1.5	)	(1)	$	(2.1	)	(1)
Assets held for sale	—		—		—		—		—				(2.8		)	(2)
	$	—	$	—	$	—	$	—	$	(1.5	)		$	(4.9	)

(1) In 2012, the Partnership determined that it would retire a number of small-diameter pipeline assets with a carrying value of $2.1 million. As a result, an asset impairment charge of $2.9 million and $4.3 million was recorded for the three and six months ended June 30, 2012, of which $1.4 million and $2.2 million represent amounts related to the asset retirement obligations recorded in the three and six months ended June 30, 2012 for these assets.

(2) In 2012, the Partnership recognized a $2.8 million impairment charge related to its Owensboro, Kentucky, office building. The office building was sold for an amount that equaled its carrying amount of $3.0 million in the third quarter 2012.