Financial Instruments and Risk Management (Tables)

6 Months Ended

Mar. 31, 2018

Fair value of the Partnership's derivative instruments and their location in the condensed consolidated balance sheets

The following summarizes the fair value of the Partnership’s derivative instruments and their location in the condensed consolidated balance sheets as of March 31, 2018 and September 30, 2017, respectively:

	As of March 31, 2018			As of September 30, 2017
Asset Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging instruments:
Commodity-related derivatives	Other current assets	$	4,867	Other current assets	$	11,164
	Other assets		752	Other assets		771
		$	5,619		$	11,935

Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging instruments:
Commodity-related derivatives	Other current liabilities	$	1,136	Other current liabilities	$	1,978
	Other liabilities		687	Other liabilities		432
		$	1,823		$	2,410

Reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs

The following summarizes the reconciliation of the beginning and ending balances of assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs:

	Fair Value Measurement Using Significant Unobservable Inputs (Level 3)
	Six Months Ended						Six Months Ended
	March 31, 2018						March 25, 2017
	Assets			Liabilities			Assets			Liabilities
Beginning balance of over-the-counter options	$	4,108		$	737		$	809		$	—
Beginning balance realized during the period		(2,466	)		(532	)		(369	)		—
Contracts purchased during the period		800			—			—			—
Change in the fair value of outstanding contracts		(1,008	)		(205	)		(143	)		—
Ending balance of over-the-counter options	$	1,434		$	—		$	297		$	—

Effect of the Partnership's derivative instruments on the condensed consolidated statements of operations

The effect of the Partnership’s derivative instruments on the condensed consolidated statements of operations and the condensed consolidated statements of comprehensive income, as applicable, for the three and six months ended March 31, 2018 and March 25, 2017 are as follows:

Three Months Ended March 31, 2018

Three Months Ended March 25, 2017

Derivatives in Cash Flow

Gains (Losses)

Recognized in OCI

Gains (Losses) Reclassified

from Accumulated OCI into

Income

Gains (Losses)

Recognized in OCI

Gains (Losses) Reclassified

from Accumulated OCI into

Income

Hedging Relationships

(Effective Portion)

Location

Amount

(Effective Portion)

Location

Amount

Interest rate swap

—

Interest expense

—

)

Interest expense

(15

)

Derivatives Not Designated

as Hedging Instruments

Unrealized Gains (Losses)

Recognized in Income

Unrealized Gains (Losses)

Recognized in Income

Location

Amount

Location

Amount

Commodity-related

derivatives

Cost of

products sold

(3,696

)

Cost of

products sold

(2,512

)

Six Months Ended March 31, 2018

Six Months Ended March 25, 2017

Derivatives in Cash Flow

Gains (Losses)

Recognized in OCI

Gains (Losses) Reclassified

from Accumulated OCI into

Income

Gains (Losses)

Recognized in OCI

Gains (Losses) Reclassified

from Accumulated OCI into

Income

Hedging Relationships

(Effective Portion)

Location

Amount

(Effective Portion)

Location

Amount

Interest rate swap

—

Interest expense

—

(10

)

Interest expense

(215

)

Derivatives Not Designated

as Hedging Instruments

Unrealized Gains (Losses)

Recognized in Income

Unrealized Gains (Losses)

Recognized in Income

Location

Amount

Location

Amount

Commodity-related

derivatives

Cost of

products sold

(5,227

)

Cost of

products sold

(2,053

)

Fair value of the Partnership's recognized derivative assets and liabilities on a gross basis and amounts offset on the condensed consolidated balance sheets

The following table presents the fair value of the Partnership’s recognized derivative assets and liabilities on a gross basis and amounts offset on the condensed consolidated balance sheets subject to enforceable master netting arrangements or similar agreements:

	As of March 31, 2018							As of September 30, 2017
						Net amounts							Net amounts
						presented in the							presented in the
	Gross amounts		Effects of netting			balance sheet		Gross amounts		Effects of netting			balance sheet
Asset Derivatives
Commodity-related derivatives	$	8,912	$	(3,293	)	$	5,619	$	16,378	$	(4,443	)	$	11,935

Liability Derivatives
Commodity-related derivatives	$	5,116	$	(3,293	)	$	1,823	$	6,853	$	(4,443	)	$	2,410

Fair Value of the Partnership's Senior Notes

Based upon quoted market prices (a Level 1 input), the fair value of the Senior Notes (also defined below in Note 8) of the Partnership are as follows:

	As of
	March 31,		September 30,
	2018		2017
5.5% senior notes due June 1, 2024	$	509,250	$	527,888
5.75% senior notes due March 1, 2025		241,250		248,750
5.875% senior notes due March 1, 2027		333,109		349,125
	$	1,083,609	$	1,125,763