Financial Instruments and Risk Management (Tables)

3 Months Ended

Dec. 29, 2018

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 December 29, 2018 and September 29, 2018, respectively:

	As of December 29, 2018			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	$	5,924	Other current assets	$	14,875
	Other assets		75	Other assets		13
		$	5,999		$	14,888
Liability Derivatives	Location	Fair Value		Location	Fair Value
Derivatives not designated as hedging instruments:
Commodity-related derivatives	Other current liabilities	$	12,117	Other current liabilities	$	6,122
	Other liabilities		—	Other liabilities		167
		$	12,117		$	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)
	December 29, 2018						December 30, 2017
	Assets			Liabilities			Assets			Liabilities
Beginning balance of over-the-counter options	$	1,546		$	361		$	4,108		$	737
Beginning balance realized during the period		(393	)		(46	)		(313	)		—
Contracts purchased during the period		—			—			—			—
Change in the fair value of outstanding contracts		2,157			(315	)		122			(305	)
Ending balance of over-the-counter options	$	3,310		$	—		$	3,917		$	432

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 months ended December 29, 2018 and December 30, 2017 are as follows:

	Three Months Ended               December 29, 2018				Three Months Ended                         December 30, 2017
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	$	(15,911	)	Cost of products sold	$	(1,531	)

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 December 29, 2018							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	$	7,386	$	(1,387	)	$	5,999	$	23,181	$	(8,293	)	$	14,888
Liability Derivatives
Commodity-related derivatives	$	13,504	$	(1,387	)	$	12,117	$	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 8) of the Partnership are as follows:

	As of
	December 29,		September 29,
	2018		2018
5.5% senior notes due June 1, 2024	$	486,680	$	518,112
5.75% senior notes due March 1, 2025		232,500		242,500
5.875% senior notes due March 1, 2027		308,658		334,250
	$	1,027,838	$	1,094,862