Financial Instruments and Risk Management (Tables)

6 Months Ended

Mar. 30, 2019

Fair Value Disclosures [Abstract]

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 30, 2019 and September 29, 2018, respectively:

	As of March 30, 2019			As of September 29, 2018
Asset Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging instruments:
Commodity-related derivatives	Other current assets	$	3,944	Other current assets	$	14,875
	Other assets		—	Other assets		13
		$	3,944		$	14,888
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging instruments:
Commodity-related derivatives	Other current liabilities	$	2,285	Other current liabilities	$	6,122
	Other liabilities		—	Other liabilities		167
		$	2,285		$	6,289

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 30, 2019						March 31, 2018
	Assets			Liabilities			Assets			Liabilities
Beginning balance of over-the-counter options	$	1,546		$	361		$	4,108		$	737
Beginning balance realized during the period		(1,179	)		(287	)		(2,466	)		(532	)
Contracts purchased during the period		—			—			800			—
Change in the fair value of outstanding contracts		869			(74	)		(1,008	)		(205	)
Ending balance of over-the-counter options	$	1,236		$	—		$	1,434		$	—

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 30, 2019 and March 31, 2018 are as follows:

	Three Months Ended March 30, 2019			Three Months Ended March 31, 2018
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	$	8,521	Cost of products sold	$	(3,696	)

	Six Months Ended March 30, 2019				Six Months Ended March 31, 2018
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	$	(7,390	)	Cost of products sold	$	(5,227	)

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 30, 2019							As of September 29, 2018
						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	$	7,101	$	(3,157	)	$	3,944	$	23,181	$	(8,293	)	$	14,888
Liability Derivatives
Commodity-related derivatives	$	5,442	$	(3,157	)	$	2,285	$	14,582	$	(8,293	)	$	6,289

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 9) of the Partnership are as follows:

	As of
	March 30,		September 29,
	2019		2018
5.5% senior notes due June 1, 2024	$	511,875	$	518,112
5.75% senior notes due March 1, 2025		242,500		242,500
5.875% senior notes due March 1, 2027		331,625		334,250
	$	1,086,000	$	1,094,862