Financial Instruments and Risk Management (Tables)

9 Months Ended

Jun. 29, 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 June 29, 2019 and September 29, 2018, respectively:

	As of June 29, 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	$	5,253	Other current assets	$	14,875
	Other assets		—	Other assets		13
		$	5,253		$	14,888
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as    hedging instruments:
Commodity-related derivatives	Other current liabilities	$	3,379	Other current liabilities	$	6,122
	Other liabilities		436	Other liabilities		167
		$	3,815		$	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)
	Nine Months Ended						Nine Months Ended
	June 29, 2019						June 30, 2018
	Assets			Liabilities			Assets			Liabilities
Beginning balance of over-the-counter options	$	1,546		$	361		$	4,108		$	737
Beginning balance realized during the period		(1,488	)		(361	)		(3,277	)		(737	)
Contracts purchased during the period		434			—			1,352			158
Change in the fair value of outstanding contracts		997			—			(800	)		—
Ending balance of over-the-counter options	$	1,489		$	—		$	1,383		$	158

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 nine months ended June 29, 2019 and June 30, 2018 are as follows:

	Three Months Ended June 29, 2019			Three Months Ended June 30, 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	$	138	Cost of products sold	$	3,806

	Nine Months Ended June 29, 2019				Nine Months Ended June 30, 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	$	(7,252	)	Cost of products sold	$	(1,421	)

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 June 29, 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	$	16,852	$	(11,599	)	$	5,253	$	23,181	$	(8,293	)	$	14,888
Liability Derivatives
Commodity-related derivatives	$	15,414	$	(11,599	)	$	3,815	$	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
	June 29,		September 29,
	2019		2018
5.5% senior notes due June 1, 2024	$	527,625	$	518,112
5.75% senior notes due March 1, 2025		251,170		242,500
5.875% senior notes due March 1, 2027		343,000		334,250
	$	1,121,795	$	1,094,862