Derivative Instruments, Hedging Activities and Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Derivative Instruments, Hedging Activities and Fair Value Measurements [Abstract]

Hedging Instruments Under the FASB's Derivative and Hedging Guidance

The following table summarizes our portfolio of interest rate swaps at June 30, 2017:

Hedged Transaction	Number and Type of Derivatives Outstanding	Notional Amount		Period of Hedge	Rate Swap	Accounting Treatment
Senior Notes OO	10 fixed-to-floating swaps	$	750.0	5/2015 to 5/2018	1.65% to 1.66%	Fair value hedge

The following table summarizes our portfolio of forward starting swaps at June 30, 2017:

Hedged Transaction	Number and Type of Derivatives Outstanding	Notional Amount		Expected Settlement Date	Average Rate Locked	Accounting Treatment
Future long-term debt offering	4 forward starting swaps	$	275.0	5/2018	2.02%	Cash flow hedge

The following table summarizes our portfolio of commodity derivative instruments outstanding at June 30, 2017 (volume measures as noted):

	Volume (1)		Accounting
Derivative Purpose	Current (2)	Long-Term (2)	Treatment
Derivatives designated as hedging instruments:
Natural gas processing:
Forecasted natural gas purchases for plant thermal reduction (Bcf)	16.4	n/a	Cash flow hedge
Forecasted sales of NGLs (MMBbls)	2.3	n/a	Cash flow hedge
Natural gas marketing:
Forecasted purchases of natural gas for fuel (Bcf)	3.0	n/a	Cash flow hedge
Natural gas storage inventory management activities (Bcf)	3.5	n/a	Fair value hedge
NGL marketing:
Forecasted purchases of NGLs and related hydrocarbon products (MMBbls)	70.4	0.1	Cash flow hedge
Forecasted sales of NGLs and related hydrocarbon products (MMBbls)	85.3	0.9	Cash flow hedge
NGLs inventory management activities (MMBbls)	1.4	n/a	Fair value hedge
Refined products marketing:
Forecasted sales of refined products (MMBbls)	0.1	n/a	Cash flow hedge
Refined products inventory management activities (MMBbls)	4.8	n/a	Fair value hedge
Crude oil marketing:
Forecasted purchases of crude oil (MMBbls)	7.6	n/a	Cash flow hedge
Forecasted sales of crude oil (MMBbls)	12.7	n/a	Cash flow hedge
Derivatives not designated as hedging instruments:
Natural gas risk management activities (Bcf) (3,4)	169.2	20.4	Mark-to-market
NGL risk management activities (MMBbls) (4)	9.7	n/a	Mark-to-market
Crude oil risk management activities (MMBbls) (4)	35.3	17.5	Mark-to-market
(1)Volume for derivatives designated as hedging instruments reflects the total amount of volumes hedged whereas volume for derivatives not designated as hedging instruments reflects the absolute value of derivative notional volumes. (2)The maximum term for derivatives designated as cash flow hedges, derivatives designated as fair value hedges and derivatives not designated as hedging instruments is December 2018, December 2017 and March 2020, respectively. (3)Current and long-term volumes include 61.0 Bcf and 9.3 Bcf, respectively, of physical derivative instruments that are predominantly priced at a marked-based index plus a premium or minus a discount related to location differences. (4)Reflects the use of derivative instruments to manage risks associated with transportation, processing and storage assets.

Derivative Assets and Liabilities Balance Sheet

The following table provides a balance sheet overview of our derivative assets and liabilities at the dates indicated:

	Asset Derivatives						Liability Derivatives
	June 30, 2017			December 31, 2016			June 30, 2017			December 31, 2016
	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivatives designated as hedging instruments
Interest rate derivatives	Current assets	$	31.7	Current assets	$	0.3	Current liabilities	$	1.6	Current liabilities	$	0.2
Interest rate derivatives	Other assets		--	Other assets		36.2	Other liabilities		--	Other liabilities		0.9
Total interest rate derivatives			31.7			36.5			1.6			1.1
Commodity derivatives	Current assets		35.2	Current assets		499.2	Current liabilities		37.0	Current liabilities		662.0
Commodity derivatives	Other assets		0.1	Other assets		--	Other liabilities		--	Other liabilities		--
Total commodity derivatives			35.3			499.2			37.0			662.0
Total derivatives designated as hedging instruments		$	67.0		$	535.7		$	38.6		$	663.1
Derivatives not designated as hedging instruments
Commodity derivatives	Current assets	$	3.1	Current assets	$	41.9	Current liabilities	$	10.3	Current liabilities	$	75.6
Commodity derivatives	Other assets		2.5	Other assets		0.3	Other liabilities		1.6	Other liabilities		1.8
Total commodity derivatives		$	5.6		$	42.2		$	11.9		$	77.4

Offsetting Financial Assets

Certain of our commodity derivative instruments are subject to master netting arrangements or similar agreements.  The following tables present our derivative instruments subject to such arrangements at the dates indicated:

	Offsetting of Financial Assets and Derivative Assets
	Gross Amounts of Recognized Assets			Gross Amounts Offset in the Balance Sheet			Amounts of Assets Presented in the Balance Sheet			Gross Amounts Not Offset in the Balance Sheet								Amounts That Would Have Been Presented On Net Basis
										Financial Instruments				Cash Collateral Received		Cash Collateral Paid
	(i)			(ii)			(iii) = (i) – (ii)			(iv)								(v) = (iii) + (iv)
As of June 30, 2017:
Interest rate derivatives		$	31.7		$	--		$	31.7		$	(0.5	)	$	--	$	--		$	31.2
Commodity derivatives			40.9			--			40.9			(40.2	)		--		--			0.7
As of December 31, 2016:
Interest rate derivatives		$	36.5		$	--		$	36.5		$	(0.2	)	$	--	$	--		$	36.3
Commodity derivatives			541.4			--			541.4			(526.8	)		--		--			14.6

Offsetting Financial Liabilities

	Offsetting of Financial Liabilities and Derivative Liabilities
	Gross Amounts of Recognized Liabilities			Gross Amounts Offset in the Balance Sheet			Amounts of Liabilities Presented in the Balance Sheet			Gross Amounts Not Offset in the Balance Sheet									Amounts That Would Have Been Presented On Net Basis
										Financial Instruments				Cash Collateral Received		Cash Collateral Paid
	(i)			(ii)			(iii) = (i) – (ii)			(iv)									(v) = (iii) + (iv)
As of June 30, 2017:
Interest rate derivatives		$	1.6		$	--		$	1.6		$	(0.5	)	$	--	$	--			$	1.1
Commodity derivatives			48.9			--			48.9			(40.2	)		--		(7.7	)			1.0
As of December 31, 2016:
Interest rate derivatives		$	1.1		$	--		$	1.1		$	(0.2	)	$	--	$	--			$	0.9
Commodity derivatives			739.4			--			739.4			(526.8	)		--		(212.4	)			0.2

Derivative Instruments Effects on Statements of Operations

The following tables present the effect of our derivative instruments designated as fair value hedges on our Unaudited Condensed Statements of Consolidated Operations for the periods indicated:

Derivatives in Fair Value Hedging Relationships	Location	Gain (Loss) Recognized in Income on Derivative
		For the Three Months Ended June 30,					For the Six Months Ended June 30,
		2017		2016			2017			2016
Interest rate derivatives	Interest expense	$	0.4	$	1.2		$	(0.5	)	$	7.3
Commodity derivatives	Revenue		18.8		(63.0	)		37.6			(82.0	)
Total		$	19.2	$	(61.8	)	$	37.1		$	(74.7	)

Derivatives in Fair Value Hedging Relationships	Location	Gain (Loss) Recognized in Income on Hedged Item
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2017			2016			2017			2016
Interest rate derivatives	Interest expense	$	(0.3	)	$	(1.3	)	$	0.6		$	(7.5	)
Commodity derivatives	Revenue		(16.3	)		51.0			(28.7	)		79.0
Total		$	(16.6	)	$	49.7		$	(28.1	)	$	71.5

Derivative Instruments Effects on Statements of Comprehensive Income

The following tables present the effect of our derivative instruments designated as cash flow hedges on our Unaudited Condensed Statements of Consolidated Operations and Unaudited Condensed Statements of Consolidated Comprehensive Income for the periods indicated:

Derivatives in Cash Flow Hedging Relationships	Change in Value Recognized in Other Comprehensive Income (Loss) on Derivative (Effective Portion)
	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2017			2016			2017			2016
Interest rate derivatives	$	(6.9	)	$	(9.4	)	$	(4.5	)	$	(9.4	)
Commodity derivatives – Revenue (1)		31.4			(80.5	)		179.0			(77.2	)
Commodity derivatives – Operating costs and expenses (1)		(1.0	)		6.8			(3.8	)		2.3
Total	$	23.5		$	(83.1	)	$	170.7		$	(84.3	)
(1)The fair value of these derivative instruments will be reclassified to their respective locations on the Unaudited Condensed Statement of Consolidated Operations upon settlement of the underlying derivative transactions, as appropriate.

Gain/(Loss) Reclassified from Accumulated Other Comprehensive Income/(Loss) to Income (Effective Portion)

Derivatives in Cash Flow Hedging Relationships	Location	Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss) to Income (Effective Portion)
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2017			2016			2017			2016
Interest rate derivatives	Interest expense	$	(10.0	)	$	(9.2	)	$	(19.6	)	$	(18.4	)
Commodity derivatives	Revenue		46.0			(34.2	)		38.5			24.6
Commodity derivatives	Operating costs and expenses		--			(1.2	)		0.4			(2.8	)
Total		$	36.0		$	(44.6	)	$	19.3		$	3.4

Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)

Derivatives in Cash Flow Hedging Relationships	Location	Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)
		For the Three Months Ended June 30,					For the Six Months Ended June 30,
		2017			2016		2017			2016
Commodity derivatives	Operating costs and expenses	$	(0.1	)	$	--	$	(1.1	)	$	--
Total		$	(0.1	)	$	--	$	(1.1	)	$	--

Gain/(Loss) Recognized in Income on Derivative

The following table presents the effect of our derivative instruments not designated as hedging instruments on our Unaudited Condensed Statements of Consolidated Operations for the periods indicated:

Derivatives Not Designated as Hedging Instruments	Location	Gain (Loss) Recognized in Income on Derivative
		For the Three Months Ended June 30,						For the Six Months Ended June 30,
		2017			2016			2017		2016
Commodity derivatives	Revenue	$	18.7		$	(45.3	)	$	34.4	$	(46.6	)
Commodity derivatives	Operating costs and expenses		(0.8	)		(0.1	)		3.7		--
Total		$	17.9		$	(45.4	)	$	38.1	$	(46.6	)

Fair Value Measurements of Financial Assets and Liabilities Measured on a Recurring Basis

The following tables set forth, by level within the Level 1, 2 and 3 fair value hierarchy, the carrying values of our financial assets and liabilities at the dates indicated.  These assets and liabilities are measured on a recurring basis and are classified based on the lowest level of input used to estimate their fair value.  Our assessment of the relative significance of such inputs requires judgment.

The values for commodity derivatives at June 30, 2017 are presented before and after the application of CME Rule 814, which deems that financial instruments cleared by the CME are settled daily in connection with variation margin payments.  As a result of this new exchange rule, CME-related derivatives are considered to have no fair value at the balance sheet date for financial reporting purposes; however, the derivatives remain outstanding and subject to future commodity price fluctuations until they are settled in accordance with their contractual terms.

	June 30, 2017 Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
Financial assets:
Interest rate derivatives	$	--		$	31.7		$	--	$	31.7
Commodity derivatives:
Value before application of CME Rule 814		29.5			147.9			0.5		177.9
Impact of CME Rule 814 change		(29.5	)		(107.5	)		--		(137.0	)
Total commodity derivatives		--			40.4			0.5		40.9
Total financial assets	$	--		$	72.1		$	0.5	$	72.6
Financial liabilities:
Liquidity Option Agreement	$	--		$	--		$	293.7	$	293.7
Interest rate derivatives		--			1.6			--		1.6
Commodity derivatives:
Value before application of CME Rule 814		9.8			134.2			0.3		144.3
Impact of CME Rule 814 change		(9.8	)		(85.6	)		--		(95.4	)
Total commodity derivatives		--			48.6			0.3		48.9
Total financial liabilities	$	--		$	50.2		$	294.0	$	344.2

	December 31, 2016 Fair Value Measurements Using
	Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Financial assets:
Interest rate derivatives	$	--	$	36.5	$	--	$	36.5
Commodity derivatives		84.5		455.2		1.7		541.4
Total financial assets	$	84.5	$	491.7	$	1.7	$	577.9
Financial liabilities:
Liquidity Option Agreement	$	--	$	--	$	269.6	$	269.6
Interest rate derivatives		--		1.1		--		1.1
Commodity derivatives		136.8		602.3		0.3		739.4
Total financial liabilities	$	136.8	$	603.4	$	269.9	$	1,010.1

Reconciliation of Changes in the Fair Value of Level 3 Financial Assets and Liabilities

The following table sets forth a reconciliation of changes in the fair values of our recurring Level 3 financial assets and liabilities on a combined basis for the periods indicated:

		For the Six Months Ended June 30,
	Location	2017			2016
Financial liability balance, net, January 1		$	(268.2	)	$	(246.7	)
Total gains (losses) included in:
Net income (1)	Revenue		0.7			0.7
Net income	Other expense, net		(5.5	)		2.2
Other comprehensive income (loss)	Commodity derivative instruments – changes in fair value of cash flow hedges		--			1.5
Settlements	Revenue		(1.4	)		(0.1	)
Transfers out of Level 3			--			0.1
Financial liability balance, net, March 31			(274.4	)		(242.3	)
Total gains (losses) included in:
Net income (1)	Revenue		0.1			--
Net income	Other expense, net		(18.6	)		(23.3	)
Other comprehensive income (loss)	Commodity derivative instruments – changes in fair value of cash flow hedges		0.1			2.0
Settlements	Revenue		(0.7	)		(0.1	)
Transfers out of Level 3			--			--
Financial liability balance, net, June 30		$	(293.5	)	$	(263.7	)
(1)There were unrealized losses of $0.7 million and $1.3 million included in these amounts for the three and six months ended June 30, 2017, respectively. There were unrealized losses of $0.1 million and unrealized gains of $0.5 million included in these amounts for the three and six months ended June 30, 2016, respectively.

Fair Value Measurements, Valuation Techniques

The followingtable provides quantitative information regarding our recurring Level 3 fair value measurements for commodity derivatives at June 30, 2017:

	Fair Value
	Financial Assets		Financial Liabilities		Valuation Techniques	Unobservable Input	Range
Commodity derivatives – Crude oil	$	0.3	$	0.2	Discounted cash flow	Forward commodity prices	$44.84-$47.60/barrel
Commodity derivatives – Ethane		0.2		0.1	Discounted cash flow	Forward commodity prices	$0.26-$0.32/gallon
Total	$	0.5	$	0.3

Asset Impairment Charges by Segment

The following table summarizes our non-cash asset impairment charges for long-lived assets by segment during each of the periods indicated:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2017		2016		2017		2016
NGL Pipelines & Services	$	2.8	$	2.1	$	3.0	$	2.4
Crude Oil Pipelines & Services		0.6		0.7		0.6		0.9
Natural Gas Pipelines & Services		9.7		9.7		9.9		9.7
Petrochemical & Refined Products Services		--		0.9		--		1.0
Total	$	13.1	$	13.4	$	13.5	$	14.0

Nonrecurring Fair Value Measurements

The following table presents categories of long-lived assets that were subject to non-recurring fair value measurements during the six months ended June 30, 2017:

			Fair Value Measurements at the End of the Reporting Period Using
	Carrying Value at June 30, 2017		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Non-Cash Impairment Loss
Long-lived assets disposed of other than by sale	$	--	$	--	$	--	$	--	$	0.9
Long-lived assets held and used		1.4		--		--		1.4		3.1
Long-lived assets held for sale		1.2		--		--		1.2		9.5
Total									$	13.5

The following table presents categories of long-lived assets that were subject to non-recurring fair value measurements during the six months ended June 30, 2016:

				Fair Value Measurements at the End of the Reporting Period Using
	Carrying Value at June 30, 2016			Quoted Prices in Active Markets for Identical Assets (Level 1)			Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Non-Cash Impairment Loss
Long-lived assets disposed of other than by sale		$	--		$	--		$	--		$	--		$	4.5
Long-lived assets held for sale			1.5			--			1.5			--			9.5
Total														$	14.0