Central Garden & Pet Company Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Additional Information (Detail)

Long-Term Debt - Additional Information (Detail) (USD $)	9 Months Ended			9 Months Ended								9 Months Ended						3 Months Ended				9 Months Ended				0 Months Ended	9 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Sep. 28, 2013	Jun. 28, 2014 LIBOR [Member]	Jun. 28, 2014 March 2014 [Member]	Jun. 28, 2014 March 2015 [Member]	Jun. 28, 2014 March 2016 [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member]	Dec. 05, 2013 Asset-based Revolving Credit Facility [Member]	Sep. 28, 2013 Asset-based Revolving Credit Facility [Member]	Jun. 29, 2013 Asset-based Revolving Credit Facility [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Option One [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Option Two [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Minimum [Member] Option One [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Minimum [Member] Option Two [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Maximum [Member] Option One [Member]	Jun. 28, 2014 Asset-based Revolving Credit Facility [Member] Maximum [Member] Option Two [Member]	Dec. 28, 2013 Prior Revolving Credit Facility [Member]	Jun. 28, 2014 Prior Revolving Credit Facility [Member]	Sep. 28, 2013 Prior Revolving Credit Facility [Member]	Jun. 29, 2013 Prior Revolving Credit Facility [Member]	Jun. 28, 2014 Prior Revolving Credit Facility [Member] Minimum [Member] Option One [Member]	Jun. 28, 2014 Prior Revolving Credit Facility [Member] Minimum [Member] Option Two [Member]	Jun. 28, 2014 Prior Revolving Credit Facility [Member] Maximum [Member] Option One [Member]	Jun. 28, 2014 Prior Revolving Credit Facility [Member] Maximum [Member] Option Two [Member]	Feb. 13, 2012 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Jun. 28, 2014 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Sep. 28, 2013 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Jun. 29, 2013 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Feb. 13, 2012 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Mar. 08, 2010 Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]	Jun. 28, 2014 Senior Subordinated Notes [Member]	Jun. 28, 2014 Senior Subordinated Notes [Member] Portion at Fair Value, Fair Value Disclosure [Member]	Sep. 28, 2013 Senior Subordinated Notes [Member] Portion at Fair Value, Fair Value Disclosure [Member]	Jun. 29, 2013 Senior Subordinated Notes [Member] Portion at Fair Value, Fair Value Disclosure [Member]
Components of long-term debt
Credit facility, maximum principal amount								$ 390,000,000	$ 390,000,000
Credit facility, additional borrowings available									200,000,000
Credit facility, maturity date								Dec. 05, 2018
Borrowings outstanding								0
Letters of credit outstanding								0
Other letters of credit outstanding								14,200,000
Debt interest terms	Borrowings under the Credit Facility will bear interest at an index based on LIBOR or, at the option of the Company, the Base Rate (defined as the highest of (a) the SunTrust prime rate, (b) the Federal Funds Rate plus 0.5% and (c) one-month LIBOR plus 1.00%), plus, in either case, an applicable margin based on the Company’s total outstanding borrowings. Such applicable margin for LIBOR-based borrowings fluctuates between 1.25%-1.75% (and was 1.25% at June 28, 2014) and such applicable margin for Base Rate borrowings fluctuates between 0.25%-0.75% (and was 0.25% at June 28, 2014).
Credit Facility, base rate computation, option first description	SunTrust prime rate
Credit Facility, base rate computation, option second description	Federal Funds Rate plus 0.5%
Credit Facility, base rate computation, option second description, basis spread percentage	0.50%
Credit Facility, basis percentage for calculation of variable rate spread	1.00%
Credit Facility, base rate computation, option third description	One-month LIBOR plus 1.00%), plus, in either case, an applicable margin based on the Company's total outstanding borrowings
Applicable interest rate on the credit facility	3.50%			1.40%								1.25%	0.25%	1.25%	0.25%	1.75%	0.75%					0.75%	1.75%	1.75%	2.75%
Debt instrument fixed charge coverage ratio	1.00
Debt issuance cost	3,100,000
Non-cash charge	1,731,000	0																1,700,000
Debt, aggregate principal amount	450,290,000	509,635,000	472,587,000					0		0	0								0	23,000,000	60,000,000						449,500,000	449,417,000	449,390,000		400,000,000
Debt instrument interest rate stated, percentage																											8.25%				8.25%	8.25%
Senior subordinated notes due date	Mar. 01, 2018																										Mar. 01, 2018
Additional issuance amount on senior notes																														50,000,000
Notes issue price percentage																										98.501%
Issuance price of additional senior subordinated notes																											2018 Notes at a price of 98.501%, plus accrued interest from September 1, 2011, in a private placement.
Obligation to pay principle on the Company senior subordinates notes																																450,000,000
Senior subordinated notes due 2018																																	$ 469,100,000	$ 449,500,000	$ 457,300,000
Notes redemption price percentage	101.00%				104.125%	102.063%	100.00%
Debt redemption terms	The Company may redeem some or all of the 2018 Notes at any time after March 1, 2014 for 104.125%, after March 1, 2015 for 102.063% and after March 1, 2016 for 100%, plus accrued and unpaid interest.