Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Dec. 31, 2011	Sep. 24, 2011
Commitments and Contingencies Disclosure [Line Items]
Purchase commitments maximum period	150 days
Long-term supply agreements, outstanding inventory component prepayments	$ 2,900,000,000	$ 2,300,000,000
Long-term supply agreements, outstanding inventory component prepayments, current	871,000,000
Long-term supply agreements, outstanding inventory component prepayments, noncurrent	2,000,000,000
The maximum term that the Company's major facility leases typically do not exceed	10 years
The maximum term that the renewal options on leases typically do not exceed	5 years
Minimum term of leases for retail space	5 years
Maximum term of leases for retail space	20 years
Majority of term of leases for retail space	10 years
Total future minimum lease payments under noncancelable operating leases	3,300,000,000
Future minimum lease payments under noncancelable operating leases related to leases for retail space	2,600,000,000
Outstanding off-balance sheet commitments for outsourced manufacturing and component purchases	13,400,000,000
Outstanding off-balance sheet commitments for other outstanding obligations	$ 2,700,000,000
Minimum
Commitments and Contingencies Disclosure [Line Items]
Long-term supply agreements, expiration year	2012
Maximum
Commitments and Contingencies Disclosure [Line Items]
Long-term supply agreements, expiration year	2022