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Borrowings and Credit Arrangements - Additional Information (Detail) (USD $) Share data in Millions, except Per Share data, unless otherwise specified	1 Months Ended	3 Months Ended					12 Months Ended			1 Months Ended	3 Months Ended			12 Months Ended			0 Months Ended	1 Months Ended	12 Months Ended						12 Months Ended				3 Months Ended		12 Months Ended	0 Months Ended		1 Months Ended	3 Months Ended		12 Months Ended		0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	3 Months Ended			0 Months Ended	3 Months Ended			12 Months Ended	0 Months Ended	12 Months Ended		12 Months Ended															0 Months Ended	1 Months Ended
	Dec. 10, 2010	Mar. 29, 2014	Dec. 28, 2013	Sep. 28, 2013	Mar. 30, 2013	Mar. 30, 2013	Sep. 27, 2014	Sep. 28, 2013	Sep. 29, 2012	Aug. 01, 2012 Credit Agreement [Member]	Mar. 29, 2014 Credit Agreement [Member]	Dec. 28, 2013 Credit Agreement [Member]	Sep. 28, 2013 Credit Agreement [Member]	Sep. 27, 2014 Credit Agreement [Member]	Sep. 28, 2013 Credit Agreement [Member]	Sep. 29, 2012 Credit Agreement [Member]	Aug. 01, 2012 Senior Notes [Member]	Aug. 01, 2012 Senior Notes [Member]	Sep. 27, 2014 Senior Notes [Member]	Sep. 28, 2013 Senior Notes [Member]	Sep. 29, 2012 Senior Notes [Member]	Sep. 27, 2014 Convertible Notes [Member]	Nov. 14, 2013 Convertible Notes [Member] 2007 Notes [Member]	Dec. 10, 2007 Convertible Notes [Member] 2007 Notes [Member]	Sep. 27, 2014 Convertible Notes [Member] Two Thousand Thirteen Original Notes [Member]	Sep. 27, 2014 Term Loan A [Member] Credit Agreement [Member]	Sep. 27, 2014 Term Loan A [Member] Credit Agreement [Member] Minimum [Member]	Sep. 27, 2014 Term Loan A [Member] Credit Agreement [Member] Maximum [Member]	Mar. 30, 2013 Term Loan A [Member] Credit Agreement [Member] Percentage Added to Base Rate [Member]	Mar. 30, 2013 Term Loan A [Member] Credit Agreement [Member] Percentage Added to Eurodollar Rate [Member]	Sep. 27, 2014 Term Loan A [Member] Revolving Credit Facility [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member]	Oct. 31, 2013 Term Loan B [Member] Credit Agreement [Member]	Aug. 02, 2013 Term Loan B [Member] Credit Agreement [Member]	Mar. 29, 2014 Term Loan B [Member] Credit Agreement [Member]	Dec. 28, 2013 Term Loan B [Member] Credit Agreement [Member]	Sep. 27, 2014 Term Loan B [Member] Credit Agreement [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member] Base Rate Floor [Member]	Aug. 02, 2013 Term Loan B [Member] Credit Agreement [Member] Base Rate Floor [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member] Percentage Added to Base Rate [Member]	Aug. 02, 2013 Term Loan B [Member] Credit Agreement [Member] Percentage Added to Base Rate [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member] Eurodollar Rate Floor [Member]	Aug. 02, 2013 Term Loan B [Member] Credit Agreement [Member] Eurodollar Rate Floor [Member]	Feb. 26, 2014 Term Loan B [Member] Credit Agreement [Member] Percentage Added to Eurodollar Rate [Member]	Aug. 02, 2013 Term Loan B [Member] Credit Agreement [Member] Percentage Added to Eurodollar Rate [Member]	Sep. 27, 2014 Revolving Credit Facilities [Member] Credit Agreement [Member]	Dec. 10, 2007 2007 Notes [Member] Convertible Notes [Member]	Dec. 25, 2010 November Eighteen Two Thousand Ten Original Notes [Member] Convertible Notes [Member]	Nov. 18, 2010 November Eighteen Two Thousand Ten Original Notes [Member] Convertible Notes [Member]	Nov. 18, 2010 November Eighteen Two Thousand Ten Original Notes [Member] Convertible Notes [Member] 2007 Notes [Member]	Feb. 29, 2012 February Twenty Nine Two Thousand Twelve Original Notes [Member] Convertible Notes [Member]	Mar. 24, 2012 February Twenty Nine Two Thousand Twelve Original Notes [Member] Convertible Notes [Member]	Feb. 29, 2012 February Twenty Nine Two Thousand Twelve Original Notes [Member] Convertible Notes [Member]	Feb. 29, 2012 February Twenty Nine Two Thousand Twelve Original Notes [Member] Convertible Notes [Member] 2007 Notes [Member]	Sep. 27, 2014 Two Thousand Seven Original Notes [Member]	Nov. 14, 2013 Two Thousand Seven Original Notes [Member] Convertible Notes [Member]	Sep. 27, 2014 Two Thousand Seven Original Notes [Member] Convertible Notes [Member]	Dec. 10, 2010 Two Thousand Seven Original Notes [Member] Convertible Notes [Member]	Sep. 27, 2014 Two Thousand Ten Original Notes [Member] Convertible Notes [Member]	Sep. 27, 2014 Two Thousand Ten Original Notes [Member] Convertible Notes [Member] Minimum [Member]	Sep. 27, 2014 Two Thousand Ten Original Notes [Member] Convertible Notes [Member] Maximum [Member]	Sep. 27, 2014 Two Thousand Twelve Original Notes [Member]	Sep. 28, 2013 Two Thousand Twelve Original Notes [Member]	Sep. 29, 2012 Two Thousand Twelve Original Notes [Member]	Sep. 27, 2014 Two Thousand Twelve Original Notes [Member] Convertible Notes [Member]	Sep. 27, 2014 Two Thousand Twelve Original Notes [Member] Convertible Notes [Member] Minimum [Member]	Sep. 27, 2014 Two Thousand Twelve Original Notes [Member] Convertible Notes [Member] Maximum [Member]	Sep. 27, 2014 Due December Two Zero One Seven [Member] Convertible Notes [Member] Two Thousand Thirteen Original Notes [Member]	Sep. 27, 2014 Thereafter [Member] Convertible Notes [Member] Two Thousand Thirteen Original Notes [Member]	Sep. 27, 2014 Two Thousand Thirteen Original Notes [Member]	Sep. 27, 2014 Two Thousand Thirteen Original Notes [Member] Convertible Notes [Member]	Sep. 27, 2014 Two Thousand Thirteen Original Notes [Member] Convertible Notes [Member] Minimum [Member]	Sep. 27, 2014 Two Thousand Thirteen Original Notes [Member] Convertible Notes [Member] Maximum [Member]	Feb. 14, 2013 February Fourteen Two Thousand And Thirteen Original Notes [Member] Convertible Notes [Member]	Feb. 14, 2013 February Fourteen Two Thousand And Thirteen Original Notes [Member] Convertible Notes [Member]	Feb. 14, 2013 February Fourteen Two Thousand And Thirteen Original Notes [Member] Convertible Notes [Member] 2007 Notes [Member]
Debt Instrument [Line Items]
Period To Remedy Event Of Default For Failure To Comply With Reporting Obligations Of Convertible Notes							90 days
Line of Credit Facility, Maximum Borrowing Capacity																										$ 1,000,000,000											$ 1,500,000,000										$ 300,000,000
Debt Instrument, Maturity Date																			Aug. 01, 2020							Aug. 01, 2017											Aug. 01, 2019										Aug. 01, 2017
Prepaid principal amount																																25,000,000	100,000,000	200,000,000
Debt extinguishment loss		4,400,000	2,900,000	6,000,000	3,200,000	3,200,000	7,400,000	9,200,000	42,300,000		4,500,000																									2,900,000													29,900,000				42,300,000												42,300,000											0
Direct Third Party Costs Interest Expense													1,100,000																						1,000,000
Maximum Range Of Present Value Of Cash Flow Percentage					10.00%																																																																		10.00%
Issue price of principal amount, Term Loan B																																						99.875%
Debt Floor Rate																																							1.75%	2.00%			0.75%	1.00%
Debt Instrument, Basis Spread on Variable Rate																													1.00%	2.00%											1.50%	1.75%			2.50%	2.75%
Basis point reduction in the interest rate on the New Term Loan B																																50.00%
Refinancing issuance costs					2,400,000
Weighted average interest rates, Borrowings outstanding under the credit agreement														2.89%	3.70%	4.00%
Interest rates under Term Loans																										2.15%											3.25%
Interest expense														75,300,000	107,600,000	18,400,000			64,000,000	63,900,000	10,700,000
Non-cash interest expense amortization of debt discount and deferred financing costs							68,700,000	81,200,000	75,000,000					12,700,000	14,500,000	2,400,000			1,700,000	1,600,000	300,000
Debt Instrument, Interest Rate, Stated Percentage																		6.25%						2.00%	2.00%																									2.00%				2.00%						2.00%						2.00%										2.00%
Debt Instrument Maturity Period																	2020																																2037			2042																							2043
Senior note interest rate per year																			6.25%
Notes principal amount										2,800,000,000								1,000,000,000					405,000,000	1,725,000,000																										450,000,000	450,000,000			500,000,000	500,000,000																					370,000,000	370,000,000
Principal Amount Of Borrowings										2,500,000,000				2,050,000,000
Net Proceeds From Debt Offering										2,410,000,000								987,400,000																														1,690,000,000
Margin Change To Term Loan																										1.00%								0.75%
Margin Change To Revolving Credit Facility																															1.00%
Percentage Of Capital Stock Of First Tier Foreign Subsidiary														65.00%
Debt Instruments Principal Repayment Due Per Quarter																											12,500,000	50,000,000
Debt Instrument, Periodic Payment, Principal																																					3,750,000
Term Loan B Principal Payment Installments							27 months
Line of Credit Facility, Commitment Fee Percentage														0.50%
Leverage Ratio Maximum														6.00
Decreased Net Leverage Ratio Pursuant To Senior Secured Credit Facility														4.00
Interest Coverage Minimum Ratio												3.25
Increased Interest Coverage Ratio Pursuant To Senior Secured Credit Facility														3.75
Offering Price Of Principal Amount																		100.00%
Debt Instrument Maximum Percentage Of Redemption Of Senior Notes																		35.00%
Debt Instrument Percentage Of Redemption Price																		106.25%
Debt Instrument Percentage Of Redemption Price Second Period																		103.125%
Debt Instrument Percentage Of Redemption Price Third Period																		102.083%
Debt Instrument Percentage Of Redemption Price Fourth Period																		101.042%
Debt Instrument Percentage Of Redemption Price Fifth Period																		100.00%
Percentage Price Of Principal Amount For Repurchase Of Senior Note Change In Control																		101.00%
Debt Instrument, Maturity Date Range, Start																						Dec. 15, 2017
Redemption Price As Percentage Of Principal Amount Plus Accrued And Unpaid Interest																						100.00%
Debt Instrument Repurchase Price Percentage Of Principle Amount																																																									100.00%
Annual Yield To Maturity On Convertible Notes																																																												2.00%						2.00%			4.00%	2.00%
Exceeds Percentage Of Accreted Principal Amount Of Original Notes																									120.00%																																			120.00%						120.00%
Conversion Of Notes Into Shares Conversion Price																																																												$ 23.03						$ 31.175						$ 38.59
Exceeds Percentage Of Conversion Price Of Common Stock																																																												130.00%						130.00%						130.00%
Number Of Trading Days																																																													20 days	30 days					20 days	30 days					20 days	30 days
Number Of Trading Days Considered For Average Closing Daily Prices Description																																																												during the five business day period after any five consecutive trading day period						during the five business day period after any five consecutive trading day period						during the five business day period after any five consecutive trading day period
Percentage To Compare Note Price To Product Of Common Stock And Conversion Rate																																																												98.00%						98.00%						98.00%
Principal Convertible To Common Stock																									1,000
Cash Per Original Principle Amount Of Exchange Notes																						1,000
Convertible Note Liability Component At Issuance Date																																																											1,256,000,000				454,200,000
Debt Instrument Convertible Effective Interest Rate One	7.62%																																																									3.25%					3.72%									5.42%
Convertible Notes Issuance Expense																						4,100,000
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt								20,000,000	23,000,000													32,500,000																																		468,900,000							79,700,000
Liability Component Of Loss On Extinguishment																																																																	39,700,000
Write off of Deferred Debt Issuance Cost																																																																	2,600,000
Debt Instrument Nonconvertible Effective Interest Rate																																																																2.89%
Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt For Derecognition																																																															41,600,000
Change In Fair Value Of Conversion Option Percentage																																																																							10.00%
Gains Losses On Exchange Of Debt																																																																								$ 0
Failure To Comply With Reporting Obligations Penalty Fee Percentage Of Convertible Notes							0.25%
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Number of Shares							62.5

X

- Definition

Adjustment to additional paid in capital resulting from applying the derecognition provisions of the Cash Conversion subsection of ASC 470 related to convertible debt instruments that were accounted for as two separate components - a debt component and an equity component.

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- Definition

Represents the rate at which the convertible notes will accrete principal to maturity beginning on either the date that the semi-annual cash coupon payments end, or as applicable, the date of issuance of new convertible notes in an exchange transaction.

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Basis Point Reduction

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In lieu of delivery of shares of the Company's common stock in satisfaction of the Company's obligation upon conversion of the Original Notes and Exchange Notes, the Company may elect to deliver cash or a combination of cash and shares of its common stock. If the Company elects to satisfy its conversion obligation in a combination of cash and shares of the Company's common stock, the Company is required to deliver up to a specified dollar amount of cash per $1,000 original principal amount of Original Notes, and will settle the remainder of its conversion obligation in shares of its common stock.

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Change in Fair Value of Conversion Option Percentage

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The convertible notes conversion price into shares of the Company's common stock.

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This amount represents the liability component of convertible notes with cash settlement features in which the debt instrument is separated into liability and equity components based on the fair value of the liability component on the issuance date pursuant to the Cash Conversion subsections of ASC 470.

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Third-party costs incurred related to the exchange of debt, that was accounted for as a modification, and was charged to the statement of income in the period incurred.

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The floor represents the minimum interest rate payable on the term loans.

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The effective interest rate on the liability component of convertible debt instrument which may be settled in cash upon conversion, including partial cash settlement.

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Debt instrument maturity period. This is the year the respective debt instrument is due.

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Maximum percentage of aggregate principal of Senior Notes that can be redeemed with net cash proceeds from certain equity offerings at any time before August 1, 2015.

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Debt Instrument Nonconvertible Effective Interest Rate

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Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company prior to August 1, 2015.

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Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company beginning August 1, 2018 and thereafter.

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Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2017 through July 31, 2018.

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Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2015 through July 31, 2016.

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Debt Instrument Percentage Of Redemption Price if Senior Notes are redeemed by the Company after August 1, 2016 through July 31, 2017.

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Debt instrument prepaid principal amount.

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Debt Instrument Repurchase Price Percentage Of Principle Amount

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Debt Instruments Principal Repayment Due Per Quarter

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- Definition

The lowest the total net leverage ratio will be under the senior secured credit facilities beginning the quarter ending September 30, 2017.

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Direct Third party Costs Interest Expense

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- Definition

Percent by which trading price of notes exceeds accreted principal resulting in contingent interest.

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The holders of the 2007 Notes, 2010 Notes, 2012 Notes and 2013 Notes may convert the notes into shares of the Company's common stock at a conversion price of approximately $38.59 per share, $23.03 per share, $31.175 and $38.59 per share, respectively, subject to adjustment, prior to the close of business on September 15, 2037 for the 2007 and 2010 Notes, March 1, 2042 for the 2012 Notes and September 15, 2043 for the 2013 Notes upon: during any calendar quarter if the last reported sale price of the Company's common stock exceeds 130% of the conversion price for at least 20 trading days in the 30 consecutive trading days ending on the last trading day of the preceding calendar quarter.

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- Definition

Represents the percentage of the accreted principal amount of the Convertible Notes to be paid as an extension fee penalty in the event of default, as defined, related to the Company's failure to comply with the reporting obligations in the Convertible Notes.

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No definition available.

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Gains Losses on Exchange of Debt

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- Definition

The interest coverage ratio increases over time under the senior secured credit facility and this ratio represents the highest it goes to beginning in the fiscal quarter ending September 30, 2017.

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No definition available.

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Interest Coverage Minimum Ratio

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Represents the interest rate in effect as of the balance sheet date.

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Issued Price Of Term Loan B

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Leverage Ratio Maximum

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- Definition

For debt instruments within the scope of the Cash Conversion Subsections of ASC 470, this amount represents the difference between the fair value of the liability component of the debt instrument immediately before extinguishment and the net carrying amount of the liability component at the time of extinguishment.

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Represents the change to the applicable margin on the secured revolving credit facility.

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Represents the change to the applicable interest margin on the term loan(s) under the credit agreement.

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Maximum Range of Present Value of Cash Flow Percentage

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- Definition

The net proceeds to the company from the debt offering after deducting underwriters discounts and fees.

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Number of trading days.

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Number of trading days considered for average closing daily prices description.

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- Definition

Offering Price Of Principal Amount

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- Definition

Represents the percent of capital stock of the company's first-tier foreign subsidiaries that is used to guarantee the company's obligations under its credit facilities.

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No definition available.

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- Definition

The percentage applied to the price of the principal amount of the Senior Notes at which the Company is required to repurchase the Senior Notes in the event there is a change-in-control.

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Percent that the trading price per note is less than product of the common stock price and conversion rate, allowing holders to convert notes to common shares.

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Represents the aggregate outstanding principal of amounts borrowed under the Credit Agreement.

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Redemption price as percentage of principal amount plus accrued and unpaid interest.

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Represents costs incurred and recorded to the statement of operations to refinance the credit agreement that were not capitalized as deferred issuance costs.

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Term Loan B Principal Payment Installments

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Amount of noncash expense included in interest expense to allocate debt discount and premium, and the costs to issue debt and obtain financing over the related debt instruments. Alternate captions include noncash interest expense.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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The average effective interest rate during the reporting period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Amount of the required periodic payments applied to principal.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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