Dolby Laboratories (DLB) 10-Q 2 Aug 19 2019 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Jun. 28, 2019	Jul. 26, 2019
Document Type	10-Q
Entity Current Reporting Status	true
Document Period End Date	Jun. 28, 2019
Document Transition Report	false
Entity File Number	001-32431
Entity Registrant Name	DOLBY LABORATORIES, INC.
Entity Central Index Key	0001308547
Current Fiscal Year End Date	--09-27
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	90-0199783
Entity Address, Address Line One	1275 Market Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103-1410
City Area Code	415
Local Phone Number	558-0200
Title of 12(b) Security	Class A common stock, $0.001 par value
Trading Symbol	DLB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		64,493,982
Class B Common Stock [Member]
Entity Common Stock, Shares Outstanding		36,276,393

Interim Condensed Consolidated

Interim Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Current assets:
Cash and cash equivalents	$ 716,560	$ 918,063
Restricted cash	7,485	7,187
Short-term investments	120,737	178,138
Accounts receivable, net of allowance for doubtful accounts of $7,207 and $5,258	231,185	166,133
Contract assets	182,912	165,959
Inventories	38,908	26,206
Prepaid expenses and other current assets	41,030	34,890
Total current assets	1,338,817	1,496,576
Long-term investments	211,352	187,782
Property, plant, and equipment, net	524,641	514,182
Intangible assets, net	189,304	184,019
Goodwill	335,936	327,982
Deferred taxes	109,208	74,766
Other non-current assets	100,550	80,080
Total assets	2,809,808	2,865,387
Current liabilities:
Accounts payable	14,304	21,922
Accrued liabilities	243,738	243,128
Income taxes payable	862	2,680
Contract liabilities	19,435	17,468
Total current liabilities	278,339	285,198
Non-current contract liabilities	24,428	25,887
Other non-current liabilities	186,765	183,799
Total liabilities	489,532	494,884
Stockholders’ equity:
Additional paid-in capital	0	66,127
Retained earnings	2,328,918	2,313,539
Accumulated other comprehensive (loss)	(14,496)	(15,832)
Total stockholders’ equity – Dolby Laboratories, Inc.	2,314,521	2,363,936
Controlling interest	5,755	6,567
Total stockholders’ equity	2,320,276	2,370,503
Total liabilities and stockholders’ equity	2,809,808	2,865,387
Class A, $0.001 par value, one vote per share, 500,000,000 shares authorized: 63,979,294 shares issued and outstanding at March 29, 2019 and 63,978,752 at September 28, 2018
Stockholders’ equity:
Common stock	58	61
Class B, $0.001 par value, ten votes per share, 500,000,000 shares authorized: 37,635,152 shares issued and outstanding at March 29, 2019 and 39,261,035 at September 28, 2018
Stockholders’ equity:
Common stock	$ 41	$ 41

Interim Condensed Consolidate_2

Interim Condensed Consolidated Balance Sheets (Parenthetical) $ in Thousands	Jun. 28, 2019USD ($)vote / shares$ / sharesshares	Sep. 28, 2018USD ($)vote / shares$ / sharesshares
Allowance for doubtful accounts | $	$ (10,448)	$ (5,258)
Class A Common Stock [Member]
Common stock, par value (usd per share) | $ / shares	$ 0.001	$ 0.001
Common stock voting right per share (votes per share) | vote / shares	1	1
Common stock, shares authorized (shares)	500,000,000	500,000,000
Common stock, shares issued (shares)	63,716,563	63,978,752
Common stock, shares outstanding (shares)	63,716,563	63,978,752
Class B Common Stock [Member]
Common stock, par value (usd per share) | $ / shares	$ 0.001	$ 0.001
Common stock voting right per share (votes per share) | vote / shares	10	10
Common stock, shares authorized (shares)	500,000,000	500,000,000
Common stock, shares issued (shares)	36,952,512	39,261,035
Common stock, shares outstanding (shares)	36,952,512	39,261,035

Interim Condensed Consolidate_3

Interim Condensed Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Revenue:
Revenue	$ 302,159	$ 214,780	$ 942,793	$ 814,029
Total revenue	302,159	214,780	942,793	814,029
Cost of revenue:
Total cost of revenue	39,690	34,383	114,894	96,303
Gross margin	262,469	180,397	827,899	717,726
Operating expenses:
Research and development	60,408	60,357	177,680	176,294
Sales and marketing	83,390	79,834	261,686	224,002
General and administrative	54,183	47,893	152,412	146,925
Restructuring charges/(credits)	30,232	(82)	30,264	(446)
Total operating expenses	228,213	188,002	622,042	546,775
Operating income	34,256	(7,605)	205,857	170,951
Other income/expense:
Interest income	6,551	5,487	19,230	13,160
Interest expense	(29)	(87)	(106)	(151)
Other income/(expense), net	1,022	(3,603)	1,075	(5,439)
Total other income	7,544	1,797	20,199	7,570
Income before income taxes	41,800	(5,808)	226,056	178,521
Provision for income taxes	(2,163)	9,067	(14,486)	(163,070)
Net income including controlling interest	39,637	3,259	211,570	15,451
Less: net (income) attributable to controlling interest	(63)	(143)	(337)	(421)
Net income attributable to Dolby Laboratories, Inc.	$ 39,574	$ 3,116	$ 211,233	$ 15,030
Net income per share:
Basic (in usd per share)	$ 0.39	$ 0.03	$ 2.07	$ 0.15
Diluted (in usd per share)	$ 0.38	$ 0.03	$ 2.01	$ 0.14
Weighted-average shares outstanding:
Basic (in shares)	101,218	103,836	102,012	103,386
Diluted (in shares)	103,717	106,950	105,025	106,943
Related party rent expense:
Included in operating expenses	$ 13,107	$ 1,017	$ 14,755	$ 2,585
Included in net income attributable to controlling interest	$ 111	$ 179	$ 463	$ 535
Common stock, dividends declared (in dollars per share)	$ 0.19	$ 0.16	$ 0.57	$ 0.48
Common Stock, Dividends, Per Share, Cash Paid	$ 0.19	$ 0.16	$ 0.57	$ 0.48
Licensing
Revenue:
Revenue	$ 271,897	$ 183,771	$ 842,484	$ 726,078
Cost of revenue:
Cost of revenue	13,290	12,111	40,761	31,980
Products and services
Revenue:
Revenue	30,262	31,009	100,309	87,951
Cost of revenue:
Cost of revenue	$ 26,400	$ 22,272	$ 74,133	$ 64,323

Interim Condensed Consolidate_4

Interim Condensed Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Statement of Comprehensive Income [Abstract]
Net income including controlling interest	$ 39,637	$ 3,259	$ 211,570	$ 15,451
Other comprehensive income:
Currency translation adjustments, net of tax of $0, $1,251, $0, and $110	(2,005)	(8,297)	(3,718)	(2,815)
Unrealized gains/(losses) on investments, net of tax of ($30), $11, $94, and $155	1,918	339	4,786	(2,813)
Unrealized gains on cash flow hedges, net of tax of $0, $0, $0, and $0	134	0	134	0
Other Comprehensive Income (Loss), Net of Tax	47	(7,958)	1,202	(5,628)
Comprehensive income	39,684	(4,699)	212,772	9,823
Less: comprehensive (income) attributable to controlling interest	77	130	(203)	(341)
Comprehensive income attributable to Dolby Laboratories, Inc.	$ 39,761	$ (4,569)	$ 212,569	$ 9,482

Interim Condensed Consolidate_5

Interim Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Statement of Comprehensive Income [Abstract]
Currency translation adjustment, tax	$ 0	$ 1,251	$ 0	$ 110
Unrealized gain (loss) on investments, tax	(30)	11	94	155
Unrealized gains on cash flow hedges, tax	$ 0	$ 0	$ 0	$ 0

Interim Condensed Consolidate_6

Interim Condensed Consolidated Statements Of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Total Dolby Laboratories, Inc.	Controlling Interest	Class A Common Stock [Member]Common Stock	Class A Common Stock [Member]Additional Paid-In Capital
Beginning balance at Sep. 29, 2017	$ 2,398,727		$ 61,331	$ 2,337,948	$ (7,753)	$ 2,391,627	$ 7,100
Beginning balance (in shares) at Sep. 29, 2017		101,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,451			15,030		15,030	421
Other comprehensive income, net of tax	(5,628)					(5,548)	(80)
Distributions to controlling interest	(1,022)						(1,022)
Stock-based compensation expense	53,476		53,476			53,476
Shares repurchased (in shares)								(1,000)
Repurchase of common stock	(90,480)		(90,479)			(90,480)
Cash dividends declared and paid on common stock	(49,596)			(49,596)		(49,596)
Common stock issued under employee stock plans	85,941		85,938			85,941
Common stock issued under employee stock plans (in shares)								3,000
Tax withholdings on vesting of restricted stock	(21,189)					(21,189)			$ (21,189)
Ending balance at Jun. 29, 2018	2,385,680		89,077	2,303,382	(13,301)	2,379,261	6,419
Ending balance (in shares) at Jun. 29, 2018		103,000
Beginning balance at Mar. 30, 2018	2,431,768		113,827	2,316,906	(5,616)	2,425,219	6,549
Beginning balance (in shares) at Mar. 30, 2018		102,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,259			3,116		3,116	143
Other comprehensive income, net of tax	(7,958)				(7,685)	(7,685)	(273)
Stock-based compensation expense	17,101		17,101			17,101
Repurchase of common stock	(55,487)		(55,487)			(55,487)
Cash dividends declared and paid on common stock	(16,640)			(16,640)		(16,640)
Common stock issued under employee stock plans	14,880		14,879			14,880
Common stock issued under employee stock plans (in shares)								1,000
Tax withholdings on vesting of restricted stock						(1,243)			(1,243)
Ending balance at Jun. 29, 2018	2,385,680		89,077	2,303,382	(13,301)	2,379,261	6,419
Ending balance (in shares) at Jun. 29, 2018		103,000
Beginning balance at Sep. 28, 2018	2,370,503		66,127	2,313,539	(15,832)	2,363,936	6,567
Beginning balance (in shares) at Sep. 28, 2018		102,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	211,570			211,233		211,233	337
Other comprehensive income, net of tax	1,202				1,336	1,336	(134)
Distributions to controlling interest	(1,015)						(1,015)
Stock-based compensation expense	$ 59,580		59,580			59,580
Shares repurchased (in shares)	(4,365,422)							(4,000)
Repurchase of common stock	$ (286,512)		(148,972)	(137,536)		(286,512)
Cash dividends declared and paid on common stock	(58,318)			(58,318)		(58,318)
Common stock issued under employee stock plans	45,027		45,026			45,027
Common stock issued under employee stock plans (in shares)								1,000
Tax withholdings on vesting of restricted stock						(21,761)			(21,761)
Ending balance at Jun. 28, 2019	2,320,276		0	2,328,918	(14,496)	2,314,521	5,755
Ending balance (in shares) at Jun. 28, 2019		99,000
Beginning balance at Mar. 29, 2019	2,352,857		0	2,361,607	(14,683)	2,347,024	5,833
Beginning balance (in shares) at Mar. 29, 2019		100,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	39,637			39,574		39,574	63
Other comprehensive income, net of tax	47				187	187	(140)
Distributions to controlling interest	(1)						(1)
Stock-based compensation expense	$ 18,863		18,863			18,863
Shares repurchased (in shares)	(1,000)
Repurchase of common stock	$ (88,632)		(35,651)	(52,980)		(88,632)
Cash dividends declared and paid on common stock	(19,283)			(19,283)		(19,283)
Common stock issued under employee stock plans	17,869		17,869			17,869
Tax withholdings on vesting of restricted stock						(1,081)			$ (1,081)
Ending balance at Jun. 28, 2019	$ 2,320,276		$ 0	$ 2,328,918	$ (14,496)	$ 2,314,521	$ 5,755
Ending balance (in shares) at Jun. 28, 2019		99,000

Interim Condensed Consolidate_7

Interim Condensed Consolidated Statements Of Stockholders' Equity - Parenthetical - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Statement of Stockholders' Equity [Abstract]
Translation adjustments, tax	$ 0	$ 1,251	$ 0	$ 110
Unrealized gains/(losses) on available-for-sale securities, tax	$ (30)	$ 11	$ 94	$ 155

Interim Condensed Consolidate_8

Interim Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018
Operating activities:
Net income including controlling interest	$ 211,570	$ 15,451
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	62,814	61,398
Stock-based compensation	59,580	53,476
Amortization of premium on investments	319	2,046
Provision for doubtful accounts	5,201	2,465
Deferred income taxes	(34,872)	15,163
Restructuring charge for exit of leased building	27,463	0
Other non-cash items affecting net income	2,100	5,147
Changes in operating assets and liabilities:
Accounts receivable	(70,022)	1,975
Inventories	(15,976)	(508)
Contract assets	(16,942)	12,897
Prepaid expenses and other assets	(13,719)	(13,718)
Accounts payable and other liabilities	(10,733)	(16,368)
Income taxes, net	(5,226)	102,422
Contract liabilities	491	(838)
Other non-current liabilities	(4,854)	(537)
Net cash provided by operating activities	197,194	240,471
Investing activities:
Purchase of investments	(220,321)	(151,585)
Proceeds from sales of investment securities	149,023	72,090
Proceeds from maturities of investment securities	109,821	194,038
Purchases of property, plant and equipment	(79,670)	(54,869)
Payments for business acquisitions, net of cash acquired	(14,919)	(6,563)
Purchases of intangible assets	(17,255)	(12,543)
Net cash provided by/(used in) investing activities	(73,321)	40,568
Financing activities:
Proceeds from issuance of common stock	45,027	85,941
Repurchase of common stock	(286,512)	(90,480)
Payment of cash dividend	(58,318)	(49,596)
Distribution to controlling interest	(1,015)	(1,022)
Shares repurchased for tax withholdings on vesting of restricted stock	(21,761)	(21,189)
Net cash used in financing activities	(322,579)	(76,346)
Effect of foreign exchange rate changes on cash and cash equivalents	(2,499)	(1,598)
Net increase/(decrease) in cash and cash equivalents	(201,205)	203,095
Cash, cash equivalents, and restricted cash at beginning of period	925,250	634,368
Cash, cash equivalents, and restricted cash at end of period	724,045	837,463
Supplemental disclosure:
Cash paid for income taxes, net of refunds received	43,549	48,931
Non-cash investing activities:
Net change in PP&E purchased and unpaid at period-end	(10,785)	4,820
Purchase consideration payable for acquisition	1,700	750
Purchase consideration payable for intangibles	$ 1,881	$ 200

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Jun. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Unaudited Interim Condensed Consolidated Financial Statements We have prepared the accompanying unaudited interim condensed consolidated financial statements in accordance with U.S. GAAP, and with SEC rules and regulations, which allow for certain information and footnote disclosures that are normally included in annual financial statements prepared in accordance with U.S. GAAP to be condensed or omitted. In our opinion, these unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements for the fiscal year ended September 28, 2018 and include all adjustments necessary for fair presentation. The accompanying unaudited interim condensed consolidated financial statements should be read in conjunction with our consolidated financial statements for the fiscal year ended September 28, 2018 , which are included in our Annual Report on Form 10-K/A filed with the SEC. The results for the fiscal quarter ended June 28, 2019 are not necessarily indicative of the results to be expected for any subsequent quarterly or annual financial period, including the fiscal year ending September 27, 2019 . Principles of Consolidation The unaudited interim condensed consolidated financial statements include the accounts of Dolby Laboratories, Inc. and our wholly owned subsidiaries. In addition, we have consolidated the financial results of jointly owned affiliated companies in which our principal stockholder has a controlling interest. We report these controlling interests as a separate line in our consolidated statements of operations as net income attributable to controlling interest and in our consolidated balance sheets as a controlling interest. We eliminate all intercompany accounts and transactions upon consolidation. Operating Segments Since we operate as a single reporting segment, all required financial segment information is included in our unaudited interim condensed consolidated financial statements. This reflects the fact that our CODM, our Chief Executive Officer, evaluates our financial information and resources, and assesses the performance of these resources on a consolidated basis. Use of Estimates The preparation of our financial statements in accordance with U.S. GAAP requires management to make certain estimates and assumptions that affect the amounts reported and disclosed in our unaudited interim condensed consolidated financial statements and accompanying notes. Significant items subject to such estimates and assumptions include estimated shipments by our licensees for which we are owed a sales–based royalty, estimated selling prices for performance obligations within revenue arrangements; valuation allowances for accounts receivable; carrying values of inventories and certain property, plant, and equipment, goodwill and intangible assets; fair values of investments; accrued liabilities including liabilities for unrecognized tax benefits, deferred income tax assets and liabilities, and stock-based compensation. Actual results could differ from our estimates. Fiscal Year Our fiscal year is a 52 or 53 week period ending on the last Friday in September. The fiscal periods presented herein include the 13 week periods ended June 28, 2019 and June 29, 2018 . Our fiscal year ending September 27, 2019 (fiscal 2019 ) and our fiscal year ended September 28, 2018 (fiscal 2018 ) both consist of 52 weeks. Reclassifications

Summary Of Significant Accounti

Summary Of Significant Accounting Policies	9 Months Ended
	Jun. 28, 2019
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies We continually assess any ASUs or other new accounting pronouncements issued by the FASB to determine their applicability and impact on us. Where it is determined that a new accounting pronouncement will result in a change to our financial reporting, we take the appropriate steps to ensure that such changes are properly reflected in our consolidated financial statements or notes thereto. Recently Issued Accounting Standards Adopted Standards At the beginning of fiscal 2019, we adopted the following standards: Revenue Recognition . We adopted ASU 2014-09, Revenue from Contracts with Customers ("ASC 606"), which outlines a comprehensive revenue recognition model. The standard requires revenue recognition to account for the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services, and in our case, requires the use of more judgment and estimates than the previous accounting requirements. ASC 606 also includes Subtopic 340-40, Other Assets and Deferred Costs - Contracts with Customers , under which the incremental costs associated with obtaining a contract are required to be capitalized and amortized as expense as the contract’s performance obligations are satisfied. We do not capitalize sales commission costs because our performance obligations on which we pay commissions are complete at contract execution. We adopted ASC 606 utilizing the full retrospective method of transition which requires a recast of each prior reporting period presented. The most significant impacts of adopting ASC 606 are as follows: • We estimate and record per-unit royalty-based revenue earned from our licensees’ shipments in the same period in which those shipments occur, instead of recognizing our per-unit royalty-based revenue in the quarter in which it is reported to us by our licensees, which is generally in the quarter after those shipments have occurred. To the extent that our revenues are influenced by seasonal trends, the trends will impact revenue one fiscal quarter earlier than was previously the case; • We record a favorable or unfavorable adjustment based on the difference between estimated and actual sales when we receive reporting of sales–based royalties on royalty statements from the licensees, generally in the subsequent fiscal quarter; • For certain transactions that have extended payment and minimum commitment terms with no further performance obligations, we recognize licensing revenues on the later of contract execution or effective date regardless of when the amounts are due and payable; • We recorded a one-time adjustment of $174.4 million to the period ending September 29, 2018 retained earnings to reflect the full impact of the accounting upon adoption. We adjusted our condensed consolidated financial statements from amounts previously reported to reflect the adoption of the new standard. Select unaudited condensed consolidated statement of income line items, which reflect the adoption of the new standard, are as follows (in thousands, except per share data): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) Revenue $ 317,447 $ (102,667 ) $ 214,780 $ 906,599 $ (92,570 ) $ 814,029 Gross margin 282,982 (102,585 ) 180,397 810,299 (92,573 ) 717,726 Provision for income taxes (13,302 ) 22,369 9,067 (198,332 ) 35,262 (163,070 ) Net income attributable to Dolby Laboratories, Inc. 83,145 (80,029 ) 3,116 72,154 (57,124 ) 15,030 Diluted earnings per share $ 0.78 $ (0.75 ) $ 0.03 $ 0.67 $ (0.53 ) $ 0.14 Select condensed consolidated balance sheet line items, which reflect the adoption of the new standard, are as follows (in thousands): September 28, 2018 (as previously reported) Effect of Adopting ASC 606 September 28, 2018 (as adjusted) ASSETS Accounts receivable, net $ 137,151 $ 28,982 $ 166,133 Contract assets — 165,959 165,959 Prepaid expenses and other current assets 35,209 (319 ) 34,890 Deferred taxes 101,070 (26,304 ) 74,766 Other non-current assets 42,280 37,800 80,080 LIABILITIES AND STOCKHOLDERS' EQUITY Accrued liabilities 223,594 19,534 243,128 Contract liabilities 23,931 (6,463 ) 17,468 Non-current contract liabilities 40,064 (14,177 ) 25,887 Other non-current liabilities 150,960 32,839 183,799 Retained earnings 2,139,154 174,385 2,313,539 Select condensed consolidated statement of cash flows line items, which reflect the adoption of the new standard, are as follows (in thousands): Fiscal Year-To-Date June 29, 2018 (as previously reported)¹ Effect of Adopting ASC 606 Fiscal Year-To-Date June 29, 2018 (as adjusted) Operating activities: Net income including controlling interest $ 72,575 $ (57,124 ) $ 15,451 Adjustments to reconcile net income to net cash provided by operating activities: Deferred income taxes 47,145 (31,982 ) 15,163 Changes in operating assets and liabilities: Accounts receivable (78,480 ) 80,455 1,975 Contract assets — 12,897 12,897 Prepaid expenses and other assets (13,719 ) 1 (13,718 ) Accounts payable and other liabilities (12,781 ) (3,587 ) (16,368 ) Contract liabilities (366 ) (472 ) (838 ) Net cash provided by operating activities 240,471 — 240,471 ¹ Previously reported statement of cash flows in the table above reflects the adoption of ASU 2016-18. The impact to our previously reported condensed consolidated statement of cash flows is not material. Refer to disclosure below for further detail. In our adoption and as allowed by ASC 606, we: • used the transaction price at the date on which the contract was completed rather than estimating variable consideration amounts in the comparative reporting period; • did not disclose the amount of the transaction price allocated to the remaining performance obligations or provide an explanation of when we expect to recognize that amount as revenue for reporting periods presented before the date of initial adoption; • reflected the aggregate effect of contract modifications in accounting for the contracts open as of the earliest reporting period presented; • did not adjust transaction prices for the effects of a significant financing component, if at contract inception, we expected the period between customer payment and the transfer of goods or services to be one year or less. We adopted Accounting Standards Update No. 2016-08, Revenue from Contracts with Customers ("ASC 606"), Principal versus Agent Considerations (Reporting Revenue Gross versus Net) ("ASU 2016-08"), which amended the principal-versus-agent implementation guidance and illustrations in ASU 2014-09. ASU 2016-08 clarifies that an entity should evaluate when it is the principal or agent for each specified good or service promised in a contract with a customer. We evaluated our contracts executed with and on our behalf with Via Licensing Corporation, our wholly-owned subsidiary that manages patent pools on behalf of third party patent owners and concluded that Via performs its functions as an agent to the patent pool licensors, which includes Dolby. Accordingly, we recognize our administrative fees and royalties net of the consideration paid to the patent licensors in the pool . Cash Flow Classification. During the first quarter of fiscal 2019, we adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . The new standard addresses eight specific cash flow issues related to the classification and presentation of cash receipts and payments in the statement of cash flows. The adoption of these updates did not have a material impact on Dolby’s consolidated financial statements. Income Taxes: Intra-Entity Asset Transfers. During the first quarter of fiscal 2019, we adopted ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory . The new standard requires the recognition of the income tax consequences of an intercompany asset transfer, other than transfers of inventory, when the transfer occurs. For intercompany transfers of inventory, the income tax effects will continue to be deferred until the inventory has been sold to a third party. The adoption of the guidance did not have a material impact on Dolby's consolidated financial statements. Restricted Cash. During the first quarter of fiscal 2019, we adopted ASU 2016-18, Restricted Cash - a consensus of the FASB Emerging Issues Task Force , which clarifies how entities should present restricted cash and restricted cash equivalents in the statement of cash flows. The new standard requires entities to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows. We adopted the new guidance using the retrospective transition approach. The reclassified restricted cash balances from investing activities to changes in cash, cash equivalents, and restricted cash on the condensed consolidated statements of cash flows were not material for all periods presented. The adjusted condensed consolidated statement of cash flows for the prior comparative period has been reclassified as a result of the adoption of the new standard. Accounting for Hedging Activities. During the first quarter of fiscal 2019, we adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The new standard eliminates the requirement to separately measure and report hedge ineffectiveness. In the third quarter of fiscal 2019, we implemented a cash flow hedging program using forward currency contracts. This standard applies to the presentation and disclosure of the cash flow hedging program, which was not material in relation to our consolidated financial statements as a whole. The adoption of the standard did not have a material impact on Dolby's consolidated financial statements. Standards Not Yet Effective Leases. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which amends the existing accounting standards for leases. Under the new standard, a lessee will be required to recognize a lease liability and right-of-use asset for most leases. The new standard also modifies the classification criteria and accounting for sales-type and direct financing leases, and requires additional disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. We will adopt the new standard using the modified retrospective transition method, thereby recognizing the cumulative effect of initially applying Topic 842 as an adjustment to opening retained earnings on the adoption date, without revising the balances in comparative periods. Upon adoption, we will recognize a lease liability and right-of-use asset for each of our lease arrangements. We anticipate adoption of the standard will not have a material impact on our consolidated income statements. We plan to elect to utilize the transition guidance within the new standard which allows us to retain the historical lease classification and initial direct costs for any leases that exist prior to adoption of the standard. We will not reassess whether any contracts entered into prior to adoption are leases. We are in the process of evaluating our existing lease contracts and implementing changes to our systems. ASU 2016-02 is effective for Dolby beginning September 28, 2019. Income Taxes: Comprehensive Income. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act ("Tax Act"). In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Act and requires entities to provide certain disclosures regarding stranded tax effects. The ASU is effective for Dolby beginning September 28, 2019, and we do not currently plan to early adopt. We are currently evaluating the timing and impact of the standard on our consolidated financial statements. Collaborative Arrangements. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606 , which clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. In addition, ASU 2018-18 precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue from contracts with customers if the counterparty is not a customer for that transaction. This standard will be effective for Dolby beginning September 29, 2020, and we do not currently plan to early adopt. We do not believe that this standard will have a material impact on our consolidated financial statements.

Revenue Recognition Revenue Rec

Revenue Recognition Revenue Recognition	9 Months Ended
	Jun. 28, 2019
Revenue from Contract with Customer [Abstract]
Revenue Recognition	Revenue Recognition We enter into revenue arrangements with our customers to license technologies, trademarks and patents for sound, imaging and voice solutions, and to sell products and services. We recognize revenue when we satisfy a performance obligation by transferring control over the use of a license, product , or service to a customer. A. Identification of the Contract or Contracts with Customers We generally determine that a contract with a customer exists upon the execution of an agreement and after consideration of collectability, which could include an evaluation of the customer's payment history, the existence of a standby letter-of-credit between the customer’s financial institution and our financial institution, public financial information, and other factors. At contract inception, we also evaluate whether two or more non-standard agreements with a customer should be combined and accounted for as a single contract. B. Identification of Performance Obligations in a Contract We generate revenues principally from the following sources, which represent performance obligations in our contracts with customers: • Licensing. We license our technologies , including patents , to a range of customers who incorporate them into their products for enhanced audio, imaging and voice functionality across broadcast, mobile, CE, PC, gaming, and other markets. • Product Sales. We design and provide audio and imaging products for the cinema, television, broadcast, communications, and entertainment industries. • Services. We provide various services to support theatrical and television production for cinema exhibition, broadcast, and home entertainment, including equipment training , mixing room alignment, equalization, as well as audio, color and light image calibration. • PCS. We provide PCS for products sold and for the equipment leased, and we support the implementation of our licensing technologies in our licensees’ products. • Equipment Leases. We collaborate with established cinema exhibitors to offer Dolby Cinema, a branded premium cinema offering for movie audiences by leasing equipment and licensing our intellectual property. • Licensing Administration Fees. We generate service fees for managing patent pools on behalf of third party patent owners through our wholly-owned subsidiary, Via Licensing Corporation. Some of our revenue arrangements include multiple performance obligations, such as hardware, software, support and maintenance, and extended warranty services. We evaluate whether promised products and services are distinct performance obligations. The majority of our arrangements with multiple performance obligations pertain to our digital cinema server and processor sales that include the following distinct performance obligations to which we allocate portions of the transaction price based on their stand-alone selling price: • Digital cinema server hardware and embedded software, which is highly dependent on and highly interrelated with the hardware. Accordingly, the hardware and embedded software represent a single performance obligation. • The right to support and maintenance, which is included with the purchase of the digital cinema server hardware, is a distinct performance obligation. • The right to receive commissioning services is a distinct performance obligation within the sale of the Dolby Atmos Cinema Processor. These services consist of the review of venue designs specifying proposed speaker placement as well as calibration services performed for installed speakers to ensure optimal playback. C. Determination of Transaction Price for Performance Obligations in a Contract After identifying the distinct performance obligations, we determine the transaction price in accordance with the terms of the underlying executed contract which may include variable consideration such as discounts, rebates, refunds, rights of returns, and incentives. We assess and update, if necessary, the amount of variable consideration to which we are entitled for each reporting period. At the end of each reporting period, we estimate and accrue a liability for returns and adjustments as a reduction to revenue based on several factors, including past returns history. With the exception of our sales-based royalties, we evaluate whether a significant financing component exists when we recognize revenue in advance of customer payments that occur over time. For example, some of our licensing arrangements include payment terms greater than one year from when we transfer control of our IP to a licensee and the receipt of the final payment for that IP. If a significant financing component exists, we classify a portion of the transaction price as interest income, instead of recognizing all the transaction price as revenue. We do not adjust the transaction price for the effects of financing if, at contract inception , the period between the transfer of control to a customer and final payment is expected to be one year or less . D. Allocation of Transaction Price to Distinct Performance Obligations in a Contract For our sales-based royalties where the license is the predominant item to which the royalties relate, we present all revenues as licensing. For revenue arrangements that include multiple performance obligations, we determine the stand-alone selling price for each distinct performance obligation based on the actual selling prices made to customers. If the performance obligation is not sold separately, we estimate the stand-alone selling price. We do so by considering market conditions such as competitor pricing strategies, customer specific information and industry technology lifecycles, internal conditions such as cost and pricing practices, or applying the residual approach method when the selling price of the good, most commonly a license, is highly variable or uncertain. Once the transaction price - including any variable consideration - has been determined, we allocate the transaction price to the performance obligations identified in the contract, and recognize revenue as or when control is transferred for each distinct performance obligation. E. Revenue Recognition as Control is Transferred to a Customer We generate our licensing revenue by licensing our technologies and patents to various types of licensees, such as chip manufacturers ("implementation licensees"), consumer product manufacturers, software vendors, and communications service providers. Our revenue recognition policies for each of these arrangements are summarized below. Initial fees from implementation licensees. Implementation licensees incorporate our technologies into their chipsets that, once approved by Dolby, are available for purchase by OEMs for use in end-user products. Implementation licensees only pay us a nominal initial fee on contract execution as consideration for the ongoing services that we provide to assist in their implementation process. Revenues from these initial fees are recognized ratably over the contractual term as a component of licensing revenue. Sales-based licensing fees. In our royalty bearing licensing agreements with OEMs, control is transferred upon the later of contract execution or the contract’s effective date. We apply the royalty exception, which requires that we recognize sales-based royalties at the later of when the sales occur based on our estimates or the completion of our performance obligations. These estimates involve the use of historical data and judgment for several key attributes including industry estimates of expected shipments, the percentage of markets using our technologies, and average sale prices. Generally, our estimates represent the current period’s shipments to which we expect our licensees to submit royalty statements in the following quarter. Upon receipt of royalty statements from the licensees with the actual reporting of sales-based royalties that we estimated previously, we record a favorable or unfavorable adjustment based on the difference, if any, between estimated and actual sales. In the third quarter of fiscal 2019 , we recorded a favorable adjustment of approximately $7 million , which was primarily related to January through March shipments and largely based on actual royalty statements received from licensees. Fixed and guaranteed licensing fees. In certain cases, our arrangements require the licensee to pay fixed, non- refundable fees independent of the actual number of units they may distribute in the future. In these cases, control is transferred and fees are recognized upon the later of contract execution or the effective date. Additionally and separate from initial fees from implementation licensees, our sales- and usage-based licensing agreements include a nominal fee, which is also recognized at a point in time in which control of the IP has been transferred. Revenues from these arrangements are included as a component of licensing revenue. Recoveries. Through compliance efforts, we identify under-reported licensed activity related to non-current periods. We may record a favorable or unfavorable revenue adjustment in connection with the findings from these compliance efforts generally upon resolution with the licensee through agreement of the findings, or upon receipt of the licensee’s correction statement. Revenues from these arrangements are included as a component of licensing revenue. We undertake activities aimed at identifying potential unauthorized uses of our technologies, which when successful result in the recognition of revenue. Recoveries stem from third parties who agree to remit payments to us based on past use of our technology. In these scenarios, a legally binding contract did not exist at time of use of our technology, and therefore, we recognize revenue recoveries upon execution of the agreement as that is the point in time to which a contract exists and control is transferred. These revenues are classified as licensing revenue. In general, we classify legal costs associated with activities aimed at identifying potential unauthorized uses of our technologies, auditing existing licensees, and on occasion, pursuing litigation as S&M in our consolidated statements of operations. We recognize licensing revenue gross of withholding taxes, which our licensees remit directly to their local tax authorities, and for which we receive a partial foreign tax credit in our income tax provision. In addition to our licensing arrangements, we also enter into arrangements to deliver products and services. Product Sales. Revenue from the sale of products is recognized when the customer obtains control of the promised good or service, which is generally upon shipment. Payments are generally made within 90 days of sale. Services. We provide various services, such as engineering services related to movie soundtrack print mastering, equipment training and maintenance, mixing room alignment, equalization, and image calibration, which we bill on a fixed fee and time and materials basis. Most of these services are of a short duration and are recognized as control of the performance obligations are transferred which is when the related services are performed. Collaborative Arrangements. We collaborate with established cinema exhibitors to offer Dolby Cinema, a branded premium cinema offering for movie audiences. Under such collaborations, Dolby and the exhibitor are both active participants, and share the risks and rewards associated with the business. Accordingly, these collaborations are governed by revenue sharing arrangements under which Dolby receives revenue based on monthly box office reports from exhibitors in exchange for the use of our imaging and sound technologies, our proprietary designs and trademark as well as for the use of our equipment at the exhibitor’s venue. The use of our equipment meets the definition of a lease, and for the related portion of Dolby's share of revenue, we apply ASC 840, Leases , and recognize revenue based on monthly box office reports from exhibitors. Our revenue share is recognized as licensing revenue in our consolidated statements of operations. In addition, we also enter into agreements where a portion involves guaranteed payments, which in some cases result in classifying the payments as a sales-type lease. In such arrangements, we consider control to transfer at the point in time to which we have installed and tested the equipment, at which point we record such guaranteed payments as product revenue. Via Administration Fee. We generate service fees for managing patent pools on behalf of third party patent owners through our wholly-owned subsidiary, Via Licensing Corporation. As an agent to licensors in the patent pool, Via receives a share of the sales-based royalty that the patent pool licensors earn from licensees. As such, we apply the sales-based royalty exception as the service provided is directly related to the patent pool licensors’ provision of IP, which results in recognition based on estimates of the licensee’s quarter shipments that use the pool’s patents. In addition to sales-based royalties, Via also has contracts where the fees are fixed. The revenue share Via receives from licensors on fixed fee contracts is recognized over the term in which we are providing services associated with the fixed fee contract. We recognize our administrative fees net of the consideration paid to the patent licensors in the pool as licensing revenue. Deferred revenue, which is a component of contract liabilities, represents amounts that are ultimately expected to be recognized as revenue, but for which we have yet to satisfy the performance obligation. On June 28, 2019 , we had $ 41.9 million of remaining performance obligations, 17% of which we expect to recognize as revenue in fiscal 2019, 32% in fiscal 2020, and the balance of 51% in fiscal years beyond 2020. F. Disaggregation of revenue The following table presents a summary of the composition of our revenue for all periods presented: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Revenue (as adjusted) (as adjusted) Licensing $ 271,897 90 % $ 183,771 86 % $ 842,484 89 % $ 726,078 89 % Products and services 30,262 10 % 31,009 14 % 100,309 11 % 87,951 11 % Total revenue $ 302,159 100 % $ 214,780 100 % $ 942,793 100 % $ 814,029 100 % The following table presents the composition of our licensing revenue for all periods presented: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Market (as adjusted) (as adjusted) Broadcast $ 134,106 49 % $ 83,760 46 % $ 356,668 42 % $ 283,027 39 % Mobile 47,034 17 % 19,596 11 % 147,966 18 % 146,473 20 % CE 28,662 11 % 27,935 15 % 117,188 14 % 103,645 14 % PC 24,579 9 % 16,530 9 % 88,929 11 % 80,786 11 % Other 37,516 14 % 35,950 19 % 131,733 15 % 112,147 16 % Total licensing revenue $ 271,897 100 % $ 183,771 100 % $ 842,484 100 % $ 726,078 100 % We license our technologies in approximately 50 countries, and our licensees distribute products that incorporate our technologies throughout the world. As shown in the table below, we generate the majority of our revenue from outside the United States. Geographic data for our licensing revenue is based on the location of our licensees’ headquarters, products revenue is based on the destination to which we ship our products, and services revenue is based on the location where services are performed. Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Revenue By Geographic Location (as adjusted) (as adjusted) United States $ 78,590 26 % $ 63,691 30 % $ 356,389 38 % $ 268,505 33 % International 223,569 74 % 151,089 70 % 586,404 62 % 545,524 67 % Total revenue $ 302,159 100 % $ 214,780 100 % $ 942,793 100 % $ 814,029 100 % G. Contract assets and liabilities Our contract assets represent rights to consideration from licensees for the use of our IP that we have estimated in a given quarter in the absence of receiving actual royalty statements from licensees. These estimates reflect our best judgment at that time, and are developed using a number of inputs, including historical experience, anticipated performance, and third-party data . In the event that our estimates differ from actual amounts reported, we record an appropriate adjustment in the quarter in which the report is received which is typically the quarter following our estimate. Actual amounts reported are typically paid within sixty days. The main drivers for change in the contract assets account are variances in quarterly estimates, and to lesser degree, timing of receipt of actual royalty statements. Our contract liabilities consist of advance payments and billings in excess of amounts earned, deferred revenue that is typically satisfied within one year, and deferred interest where we have significant financing. The non-current portion of contract liabilities is separately disclosed in our consolidated balance sheets. We present the net contract asset or liability when we have both contract assets and contract liabilities for a single contract. In the third quarter of fiscal 2019, we recognized $6.6 million from prior period deferred revenue and deferred interest from arrangements which include a significant financing component. The following table presents a summary of the balances to which contract assets and liabilities related to revenue are recorded for all periods presented: June 28, 2019 September 28, 2018 Change ($) Change (%) (as adjusted) Accounts receivable, net $ 231,185 $ 166,133 $ 65,052 39 % Contract assets 182,912 165,959 16,953 10 % Other non-current assets 100,550 80,080 20,470 26 % Contract liabilities - current 19,435 17,468 1,967 11 % Contract liabilities - non-current 24,428 25,887 (1,459 ) (6 )% Other non-current liabilities 186,765 183,799 2,966 2 %

Composition Of Certain Financia

Composition Of Certain Financial Statement Captions	9 Months Ended
	Jun. 28, 2019
Composition Of Certain Financial Statement Captions [Abstract]
Composition Of Certain Financial Statement Captions	4 . Composition of Certain Financial Statement Captions The following tables present detailed information from our consolidated balance sheets as of June 28, 2019 and September 28, 2018 (amounts displayed in thousands, except as otherwise noted). Accounts Receivable June 28, September 28, 2018 (as adjusted) Trade accounts receivable $ 194,024 $ 108,929 Accounts receivable from patent administration program licensees 47,609 62,462 Accounts receivable, gross 241,633 171,391 Less: allowance for doubtful accounts (10,448 ) (5,258 ) Total $ 231,185 $ 166,133 Trade accounts receivable includes unbilled accounts receivable balances related to amounts that are contractually owed. The unbilled balance represents our unconditional right to consideration related to fixed fee contracts which we are entitled to as a result of satisfying, or partially satisfying, performance obligations, as well as Via's unconditional right to consideration related to their patent administration programs. Inventories June 28, September 28, Raw materials $ 9,338 $ 6,095 Work in process 3,607 4,044 Finished goods 25,963 16,067 Total $ 38,908 $ 26,206 Inventories are stated at the lower of cost and net realizable value. Inventory with a consumption period expected to exceed twelve months is recorded within other non-current assets in our consolidated balance sheets. We have included $2.9 million and $2.6 million of raw materials inventory within other non-current assets in our consolidated balance sheets as of June 28, 2019 and September 28, 2018 , respectively. Based on anticipated inventory consumption rates, and aside from existing write-downs due to excess inventory, we do not believe that material risk of obsolescence exists prior to ultimate sale. Prepaid Expenses And Other Current Assets June 28, September 28, 2018 (as adjusted) Prepaid expenses $ 20,348 $ 18,508 Other current assets 19,930 13,946 Income tax receivable 752 2,436 Total $ 41,030 $ 34,890 As of June 28, 2019, other current assets include the carrying value of $2.2 million of land and building that are currently held for sale. Management has committed to a plan to sell the property. Based on current estimated selling prices in the market, we have determined that no indicators of potential impairment exist. Accrued Liabilities June 28, September 28, 2018 (as adjusted) Accrued royalties $ 2,973 $ 2,648 Amounts payable to patent administration program partners 52,024 69,061 Accrued compensation and benefits 73,014 84,491 Accrued professional fees 15,154 9,749 Unpaid PP&E additions 4,631 13,956 Other accrued liabilities 95,942 63,223 Total $ 243,738 $ 243,128 Other Non-Current Liabilities June 28, September 28, Supplemental retirement plan obligations $ 3,284 $ 3,388 Non-current tax liabilities 135,839 129,253 Other liabilities 47,642 51,158 Total $ 186,765 $ 183,799

Investments & Fair Value Measur

Investments & Fair Value Measurements	9 Months Ended
	Jun. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Investments & Fair Value Measurements	. Investments & Fair Value Measurements We use cash holdings to purchase investment grade securities diversified among security types, industries, and issuers. All of our investment securities are measured at fair value, and are recorded within cash equivalents and both short-term and long-term investments in our consolidated balance sheets. With the exception of our mutual fund investments held in our SERP and classified as trading securities, all of our investments are classified as AFS securities. Derivative contracts are used to hedge currency risk, these are carried at fair value and classified as other assets and other liabilities. Our investment securities primarily consist of government bonds, certificates of deposit, municipal debt securities, corporate bonds, U.S. agency securities, and commercial paper. In addition, our cash and cash equivalents also consist of highly-liquid money market funds. Consistent with our investment policy, none of our municipal debt investments are supported by letters of credit or standby purchase agreements. Our cash and investment portfolio consisted of the following (in thousands): June 28, 2019 Cost Unrealized Estimated Fair Value Gains Losses Total Level 1 Level 2 Level 3 Cash and cash equivalents: Cash $ 652,269 $ — $ — $ 652,269 $ 652,269 $ — $ — Cash equivalents: Certificate of deposit (1) 12,376 — — 12,376 — 12,376 — Commercial paper 13,051 2 — 13,053 — 13,053 — Corporate bonds 6,265 — (1 ) 6,264 — 6,264 — Money market funds 15,084 — — 15,084 15,084 — — Municipal debt securities 1,000 — — 1,000 — 1,000 — Government bonds 16,513 1 — 16,514 16,514 — — Cash and cash equivalents 716,558 3 (1 ) 716,560 683,867 32,693 — Short-term investments: Certificate of deposit (1) 1,486 1 — 1,487 — 1,487 — U.S. agency securities 6,272 10 (6 ) 6,276 — 6,276 — Government bonds 11,952 11 — 11,963 11,963 — — Commercial paper 6,472 13 — 6,485 — 6,485 — Corporate bonds 82,230 51 (112 ) 82,169 — 82,169 — Municipal debt securities 12,345 14 (2 ) 12,357 — 12,357 — Short-term investments 120,757 100 (120 ) 120,737 11,963 108,774 — Long-term investments: Asset backed securities 7,799 66 — 7,865 — 7,865 — U.S. agency securities 11,895 134 (19 ) 12,010 — 12,010 — Government bonds 21,871 177 (36 ) 22,012 22,012 — — Corporate bonds 154,196 1,563 (55 ) 155,704 — 155,704 — Municipal debt securities 11,809 103 (2 ) 11,910 — 11,910 — Other long-term investments (2) 1,851 — — 1,851 7 — — Long-term investments 209,421 2,043 (112 ) 211,352 22,019 187,489 — Total cash, cash equivalents, and investments $ 1,046,736 $ 2,146 $ (233 ) $ 1,048,649 $ 717,849 $ 328,956 $ — Investments held in supplemental retirement plan: Assets 3,382 — — 3,382 3,382 — — Included in prepaid expenses and other current assets & other non-current assets Liabilities 3,382 — — 3,382 3,382 — — Included in accrued liabilities & other non-current liabilities Currency derivatives as hedge instruments: Assets — 231 — 231 — 231 — Included in other current assets Liabilities — — (47 ) (47 ) — (47 ) — Included in other accrued expenses (1) Certificates of deposit include marketable securities, while those with a maturity in excess of one year as of June 28, 2019 are classified within long-term investments. (2) Other long-term investments as of June 28, 2019 include investments that are not carried at fair value including an equity method investment of $1.8 million . September 28, 2018 Cost Unrealized Estimated Fair Value Gains Losses Total Level 1 Level 2 Level 3 Cash and cash equivalents: Cash $ 905,660 $ — $ — $ 905,660 $ 905,660 $ — $ — Cash equivalents: Commercial paper 5,058 — — 5,058 — 5,058 — Corporate bonds 1,005 — — 1,005 — 1,005 — Money market funds 3,301 — — 3,301 3,301 — — Municipal debt securities 545 — (1 ) 544 — 544 — Government bonds 2,495 — — 2,495 2,495 — — Cash and cash equivalents 918,064 — (1 ) 918,063 911,456 6,607 — Short-term investments: Certificate of deposit (1) 12,875 14 — 12,889 — 12,889 — U.S. agency securities 11,997 — (135 ) 11,862 — 11,862 — Government bonds 7,970 — (15 ) 7,955 7,955 — — Commercial paper 4,276 — — 4,276 — 4,276 — Corporate bonds 111,245 50 (494 ) 110,801 — 110,801 — Municipal debt securities 30,475 — (120 ) 30,355 — 30,355 — Short-term investments 178,838 64 (764 ) 178,138 7,955 170,183 — Long-term investments: U.S. agency securities 9,791 — (166 ) 9,625 — 9,625 — Government bonds 15,966 — (317 ) 15,649 15,649 — — Corporate bonds 146,561 33 (1,810 ) 144,784 — 144,784 — Municipal debt securities 17,235 — (112 ) 17,123 — 17,123 — Other long-term investments (2) 355 246 — 601 246 — — Long-term investments 189,908 279 (2,405 ) 187,782 15,895 171,532 — Total cash, cash equivalents, and investments $ 1,286,810 $ 343 $ (3,170 ) $ 1,283,983 $ 935,306 $ 348,322 $ — Investments held in supplemental retirement plan: Assets 3,486 — — 3,486 3,486 — — Included in prepaid expenses and other current assets & other non-current assets Liabilities 3,486 — — 3,486 3,486 — — Included in accrued liabilities & other non-current liabilities (1) Certificates of deposit include marketable securities, while those with a maturity in excess of one year as of September 28, 2018 are classified within long-term investments. (2) Other long-term investments as of September 28, 2018 include a marketable equity security of $0.2 million , and other investments that are not carried at fair value including an equity method investment of $0.4 million . During fiscal 2018, we recorded write-off charges to reduce the carrying value of two cost method equity investments to zero in recognition of an other-than-temporary impairment for each investment. Fair Value Hierarchy. Fair value is the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability, in an orderly transaction between market participants at the measurement date. We minimize the use of unobservable inputs and use observable market data, if available, when determining fair value. We classify our inputs to measure fair value using the following three-level hierarchy: Level 1: Quoted prices in active markets at the measurement date for identical assets and liabilities. We base the fair value of our Level 1 financial instruments, which are traded in active markets, using quoted market prices for identical instruments. Level 2: Prices may be based upon quoted prices in active markets or inputs not quoted on active markets but are corroborated by market data. We obtain the fair value of our Level 2 investments from a professional pricing service, which may use quoted market prices for identical or comparable instruments, or model driven valuations using observable market data or inputs corroborated by observable market data. To validate the fair value determination provided by our primary pricing service, we perform quality controls over values received which include comparing our pricing service provider’s assessment of the fair values of our investment securities against the fair values of our investment securities obtained from another independent source, reviewing the pricing movement in the context of overall market trends, and reviewing trading information from our investment managers. In addition, we assess the inputs and methods used in determining the fair value in order to determine the classification of securities in the fair value hierarchy. The fair value of the currency derivatives are calculated from market spot rates, forward rates, interest rates, and credit ratings at the end of the period. Level 3: Unobservable inputs are used when little or no market data is available and reflect management’s estimates of assumptions that market participants would use in pricing the asset or liability. Securities In Gross Unrealized Loss Position. We periodically evaluate our investments for other-than- temporary declines in fair value. The unrealized losses on our AFS securities were primarily the result of unfavorable changes in interest rates subsequent to the initial purchase of these securities. The following table presents the gross unrealized losses and fair value for those AFS securities that were in an unrealized loss position for less than twelve months and for twelve months or greater as of June 28, 2019 and September 28, 2018 (in thousands): June 28, 2019 September 28, 2018 Less Than 12 Months 12 Months Or Greater Less Than 12 Months 12 Months Or Greater Investment Type Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Certificate of deposit $ 2,300 $ — $ — $ — $ — $ — $ — $ — U.S. agency securities 796 (3 ) 7,074 (22 ) — — 21,486 (302 ) Government bonds 16,649 (1 ) 8,647 (36 ) 16,633 (332 ) — — Commercial paper — — — — 5,737 (1 ) — — Corporate bonds 20,145 (30 ) 53,766 (137 ) 143,051 (1,680 ) 52,162 (624 ) Municipal debt securities 1,683 — 4,299 (3 ) 41,058 (191 ) 6,965 (41 ) Total $ 41,573 $ (34 ) $ 73,786 $ (198 ) $ 206,479 $ (2,204 ) $ 80,613 $ (967 ) Although we had certain securities that were in an unrealized loss position as of June 28, 2019 , we expect to recover the full carrying value of these securities. As a result, we do not consider any portion of the unrealized losses at either June 28, 2019 or September 28, 2018 to represent an other–than–temporary impairment, nor do we consider any of the unrealized losses to be credit losses. Investment Maturities. The following table summarizes the amortized cost and estimated fair value of the AFS securities within our investment portfolio based on stated maturities as of June 28, 2019 and September 28, 2018 , which are recorded within cash equivalents and both short and long-term investments in our consolidated balance sheets (in thousands): June 28, 2019 September 28, 2018 Range of maturity Amortized Cost Fair Value Amortized Cost Fair Value Due within 1 year $ 189,056 $ 189,039 $ 191,241 $ 190,541 Due in 1 to 2 years 125,979 126,737 122,131 120,545 Due in 2 to 3 years 77,591 78,764 67,423 66,637 Total $ 392,626 $ 394,540 $ 380,795 $ 377,723

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Jun. 28, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	. Property, Plant, & Equipment Property, plant, and equipment are recorded at cost, with depreciation expense included in cost of licensing, cost of products and services, R&D, S&M, and G&A expenses in our consolidated statements of operations. PP&E consist of the following (in thousands): June 28, September 28, Land $ 41,950 $ 43,342 Buildings and building improvements 282,857 283,474 Leasehold improvements 67,748 66,866 Machinery and equipment 117,058 111,603 Computer equipment and software 217,087 194,079 Furniture and fixtures 30,807 30,556 Equipment provided under operating leases 156,047 139,201 Construction-in-progress 13,901 7,342 Property, plant, and equipment, gross 927,455 876,463 Less: accumulated depreciation (402,814 ) (362,281 ) Property, plant, & equipment, net $ 524,641 $ 514,182

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Jun. 28, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	. Goodwill & Intangible Assets Goodwill The following table outlines changes to the carrying amount of goodwill (in thousands): Goodwill Balance at September 28, 2018 $ 327,982 Acquired goodwill (1) 9,173 Translation adjustments (1,219 ) Balance at June 28, 2019 $ 335,936 (1) Acquired goodwill consists of an immaterial acquisition of a privately held technology company completed during the third quarter of fiscal 2019. Intangible Assets Our intangible assets are stated at their original cost less accumulated amortization, and principally consist of acquired technology, patents, trademarks, customer relationships and contracts. Intangible assets subject to amortization consist of the following (in thousands): June 28, 2019 September 28, 2018 Intangible Assets Cost Accumulated Amortization Net Cost Accumulated Amortization Net Acquired patents and technology $ 338,920 $ (170,722 ) $ 168,198 $ 319,082 $ (152,775 ) $ 166,307 Customer relationships 63,223 (43,282 ) 19,941 58,342 (41,012 ) 17,330 Other intangibles 24,463 (23,298 ) 1,165 22,742 (22,360 ) 382 Total $ 426,606 $ (237,302 ) $ 189,304 $ 400,166 $ (216,147 ) $ 184,019 We purchase various patents and developed technologies that enable us to further develop our audio, imaging, and potential product offerings. With regard to our purchase of intangible assets during the periods presented, the following table summarizes the consideration paid, the weighted-average useful lives over which the acquired assets will be amortized using the greater of either the straight-line basis or a ratio-to-revenue method, and the classification of their amortized expense in our consolidated statements of operations: Fiscal Period Total Purchase Consideration (1) Weighted-Average Useful Life (in millions) (in years) Fiscal 2018 Q1 - Quarter ended December 29, 2017 $12.0 14.1 Q2 - Quarter ended March 30, 2018 $2.8 5.3 Q3 - Quarter ended June 29, 2018 $0.7 5.0 $15.5 12.1 Fiscal 2019 Q1 - Quarter ended December 28, 2018 $12.1 11.6 Q2 - Quarter ended March 29, 2019 $5.0 4.0 Q3 - Quarter ended June 28, 2019 $10.2 5.4 $27.3 7.9 (1) Amortization expense on the intangible assets from patent portfolio and business acquisitions is included within cost of revenue, R&D, and G&A in our consolidated statements of operations. Amortization expense for our intangible assets is included in cost of licensing, cost of products, R&D, S&M, and G&A expenses in our consolidated statements of operations. Amortization expense was $7.6 million and $6.7 million in the third quarter of fiscal 2019 and 2018 , respectively, and $21.6 million and $19.8 million in the fiscal year-to-date period ended June 28, 2019 and June 29, 2018 , respectively. As of June 28, 2019 , estimated amortization expense in future fiscal periods was as follows (in thousands): Fiscal Year Amortization Expense (in thousands) Remainder of 2019 $ 8,204 2020 31,568 2021 30,974 2022 28,280 2023 24,325 Thereafter 65,953 Total $ 189,304

Stockholders' Equity And Stock-

Stockholders' Equity And Stock-Based Compensation	9 Months Ended
	Jun. 28, 2019
Stockholders' Equity And Stock-Based Compensation [Abstract]
Stockholders' Equity And Stock-Based Compensation	. Stockholders' Equity & Stock-Based Compensation We provide stock-based awards as a form of compensation for employees, officers, and directors. We have issued stock-based awards in the form of stock options and restricted stock units ("RSUs") under our equity incentive plans, as well as shares under our ESPP. Common Stock - Class A and Class B Our Board of Directors has authorized two classes of common stock, Class A and Class B. At June 28, 2019 , we had authorized 500,000,000 Class A shares and 500,000,000 Class B shares. At June 28, 2019 , we had 63,716,563 shares of Class A common stock and 36,952,512 shares of Class B common stock issued and outstanding. Holders of our Class A and Class B common stock have identical rights, except that holders of our Class A common stock are entitled to one vote per share and holders of our Class B common stock are entitled to ten votes per share. Shares of Class B common stock can be converted to shares of Class A common stock at any time at the option of the stockholder and automatically convert upon sale or transfer, except for certain transfers specified in our amended and restated certificate of incorporation. Stock Incentive Plans 2005 Stock Plan. In January 2005, our stockholders approved our 2005 Stock Plan, which our Board of Directors adopted in November 2004. The 2005 Stock Plan became effective on February 16, 2005, the day prior to the completion of our initial public offering. Our 2005 Stock Plan, as amended and restated, provides for the ability to grant incentive stock options, non-qualified stock options, restricted stock, RSUs, stock appreciation rights, deferred stock units, performance units, performance bonus awards, and performance shares. A total of 46.0 million shares of our Class A common stock is authorized for issuance under the 2005 Stock Plan. For awards granted prior to February 2011, any shares subject to an award with a per share price less than the fair market value of our Class A common stock on the date of grant and any shares subject to an outstanding RSU award will be counted against the authorized share reserve as two shares for every one share subject to the award, and if returned to the 2005 Stock Plan, such shares will be counted as two shares for every one share returned. For those awards granted from February 2011 onward, any shares subject to an award with a per share price less than the fair market value of our Class A common stock on the date of grant and any shares subject to an outstanding RSU award will be counted against the authorized share reserve as 1.6 shares for every one share subject to the award, and if returned to the 2005 Stock Plan, such shares will be counted as 1.6 shares for every one share returned. Stock Options. Stock options are granted at fair market value on the date of grant. Options granted to employees and officers prior to June 2008 generally vested over four years , with equal annual cliff-vesting and expire on the earlier of ten years after the date of grant or three months after termination of service. Options granted to employees and officers from June 2008 onward generally vest over four years, with 25% of the shares subject to the option becoming exercisable on the one-year anniversary of the date of grant and the balance of the shares vesting in equal monthly installments over the following 36 months . These options expire on the earlier of ten years after the date of grant or three months after termination of service. All options granted vest over the requisite service period and upon the exercise of stock options, we issue new shares of Class A common stock under the 2005 Stock Plan. Our 2005 Stock Plan also allows us to grant stock awards which vest based on the satisfaction of specific performance criteria. Performance-Based Stock Options (PSOs). In fiscal 2016, we began granting PSOs to our executive officers with shares of our Class A common stock underlying such options. The contractual term for the PSOs is seven years , with vesting contingent upon market-based performance conditions, representing the achievement of specified Dolby annualized TSR targets at the end of a three -year measurement period following the date of grant. If the minimum conditions are met, the PSOs earned will cliff vest on the third anniversary of the grant date, upon certification of achievement of the performance conditions by our Compensation Committee. Anywhere from 0% to 125% of the shares subject to a PSO may vest based on achievement of the performance conditions at the end of the three-year performance period. In valuing the PSOs which will be recognized as compensation cost, we used a Monte Carlo valuation model. Aside from the use of an expected term for the PSOs commensurate with their shorter contractual term, the nature of the valuation inputs used in the Monte Carlo valuation model were consistent with those used to value our non-performance based options granted under the 2005 Stock Plan. Compensation cost is being amortized on a straight-line basis over the requisite service period. On December 15, 2018, we granted PSOs to our executive officers exercisable for an aggregate of 241,100 shares at the target award amount, which would be exercisable up to an aggregate of 301,375 shares at 125% of the target award amount. On December 15, 2017, we granted PSOs to our executive officers exercisable for an aggregate of 264,000 shares at the target award amount, which would be exercisable up to an aggregate of 330,000 shares at 125% of the target award amount. On December 15, 2016, we granted PSOs to our executive officers exercisable for an aggregate of 276,199 shares at the target award amount, which would be exercisable up to an aggregate of 345,248 shares at 125% of the target award amount. On December 15, 2015, we granted PSOs to our executive officers, which vested in December 2018 at 125% of the target award amount, for an aggregate of 334,623 shares. As of June 28, 2019 , PSOs which would be exercisable for an aggregate of 758,299 shares at the target award amount ( 1,224,987 at 125% of the target award amount) were outstanding. The following table summarizes information about all stock options issued under our 2005 Stock Plan: Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value (1) (in thousands) (in years) (in thousands) Options outstanding at September 28, 2018 7,365 $ 43.51 Grants 1,245 64.60 Exercises (842 ) 35.92 Forfeitures and cancellations (141 ) 52.35 Options outstanding at June 28, 2019 7,627 47.63 6.45 $ 129,424 Options vested and expected to vest at June 28, 2019 7,272 46.92 6.37 128,586 Options exercisable at June 28, 2019 4,425 $ 40.42 5.47 106,992 (1) Aggregate intrinsic value is based on the closing price of our Class A common stock on June 28, 2019 of $64.60 and excludes the impact of options that were not in-the-money. Restricted Stock Units. Beginning in fiscal 2008, we began granting RSUs to certain directors, officers, and employees under our 2005 Stock Plan. Awards granted to employees and officers generally vest over four years, with equal annual cliff-vesting. Awards granted to directors prior to November 2010 generally vested over three years, with equal annual cliff-vesting. Awards granted after November 2010 and prior to fiscal 2014 to new directors vested over approximately two years, with 50% vesting per year, while awards granted from November 2010 onward to ongoing directors generally vest over approximately one year. Awards granted to new directors from fiscal 2014 onward vest on the earlier of the first anniversary of the award’s date of grant, or the day immediately preceding the date of the next annual meeting of stockholders that occurs after the award’s date of grant. Our 2005 Stock Plan also allows us to grant RSUs that vest based on the satisfaction of specific performance criteria, although no such awards had been granted as of June 28, 2019 . At each vesting date, the holder of the award is issued shares of our Class A common stock. Compensation expense from these awards is equal to the fair market value of our Class A common stock on the date of grant and is recognized on a straight-line basis over the requisite service period. The following table summarizes information about RSUs issued under our 2005 Stock Plan: Shares Weighted-Average Grant Date Fair Value (in thousands) Non-vested at September 28, 2018 2,806 $ 51.62 Granted 1,288 65.05 Vested (1,006 ) 47.66 Forfeitures (186 ) 56.21 Non-vested at June 28, 2019 2,902 $ 58.66 Employee Stock Purchase Plan . Our plan allows eligible employees to have up to 10 percent of their eligible compensation withheld and used to purchase Class A common stock, subject to a maximum of $25,000 worth of stock purchased in a calendar year or no more than 1,000 shares in an offering period, whichever is less. An offering period consists of successive six -month purchase periods, with a look back feature to our stock price at the commencement of a one -year offering period. The plan provides for a discount equal to 15 percent of the lower of the closing price of our Class A common stock on the New York Stock Exchange on the first and last day of the offering periods. The plan also includes an automatic reset feature that provides for an offering period to be reset and recommenced to a new lower-priced offering if the offering price of a new offering period is less than that of the immediately preceding offering period. Stock Option Valuation Assumptions We use the Black-Scholes option pricing model to determine the estimated fair value of employee stock options at the date of the grant. The Black-Scholes model includes inputs that require us to make certain estimates and assumptions regarding the expected term of the award, as well as the future risk-free interest rate, and the volatility of our stock price over the expected term of the award. Expected Term. The expected term of an award represents the estimated period of time that options granted will remain outstanding, and is measured from the grant date to the date at which the option is either exercised or canceled. Our determination of the expected term involves an evaluation of historical terms and other factors such as the exercise and termination patterns of our employees who hold options to acquire our Class A common stock, and is based on certain assumptions made regarding the future exercise and termination behavior. Risk-Free Interest Rate. The risk-free interest rate is based on the yield curve of United States Treasury instruments in effect on the date of grant. In determining an estimate for the risk-free interest rate, we use average interest rates based on these instruments’ constant maturities with a term that approximates and corresponds with the expected term of our awards. Expected Stock Price Volatility. The expected volatility represents the estimated volatility in the price of our Class A common stock over a time period that approximates the expected term of the awards, and is determined using a blended combination of historical and implied volatility. Historical volatility is representative of the historical trends in our stock price for periods preceding the measurement date for a period that is commensurate with the expected term. Implied volatility is based upon externally traded option contracts of our Class A common stock. Dividend Yield. The dividend yield is based on our anticipated dividend payout over the expected term of our option awards. Dividend declarations and the establishment of future record and payment dates are subject to the Board of Directors’ continuing determination that the dividend policy is in the best interests of our stockholders. The dividend policy may be changed or canceled at the discretion of the Board of Directors at any time. The weighted-average assumptions used in the determination of the fair value of our stock options were as follows: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Expected life (in years) 4.90 5.06 4.90 5.06 Risk-free interest rate 2.4 % 2.9 % 2.7 % 2.2 % Expected stock price volatility 22.5 % 22.5 % 22.9 % 22.6 % Dividend yield 1.2 % 1.0 % 1.1 % 1.1 % Stock-Based Compensation Expense Stock-based compensation expense for equity awards granted to employees is determined by estimating their fair value on the date of grant, and recognizing that value as an expense on a straight-line basis over the requisite service period in which our employees earn the awards. Compensation expense related to these equity awards is recognized net of estimated forfeitures, which reduce the expense recorded in the consolidated statements of operations. The selection of applicable estimated forfeiture rates is based on an evaluation of trends in our historical forfeiture data with consideration for other potential driving factors. If in subsequent periods actual forfeitures significantly differ from our initial estimates, we will revise such estimates accordingly. The following two tables separately present stock-based compensation expense both by award type and classification in our consolidated statements of operations (in thousands): Expense - By Award Type Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Compensation expense - by type Stock options $ 4,260 $ 4,500 $ 13,561 $ 16,554 Restricted stock units 13,566 11,581 42,836 33,993 Employee stock purchase plan 1,037 1,020 3,183 2,929 Total stock-based compensation 18,863 17,101 59,580 53,476 Benefit from income taxes (3,320 ) (3,488 ) (10,545 ) (11,041 ) Total stock-based compensation, net of tax $ 15,543 $ 13,613 $ 49,035 $ 42,435 Expense - By Income Statement Line Item Classification Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Compensation expense - by classification Cost of products and services $ 428 $ 400 $ 1,328 $ 1,167 Research and development 5,830 4,859 17,856 14,486 Sales and marketing 6,918 6,469 $ 22,352 $ 18,266 General and administrative 5,687 5,373 18,044 19,557 Total stock-based compensation expense 18,863 17,101 59,580 53,476 Benefit from income taxes (3,320 ) (3,488 ) (10,545 ) (11,041 ) Total stock-based compensation, net of tax $ 15,543 $ 13,613 $ 49,035 $ 42,435 The tax benefit that we recognize from shares issued under our ESPP is excluded from the tables above. This benefit was as follows (in thousands): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Tax benefit - shares issued under ESPP $ 104 $ 113 $ 305 $ 470 Unrecognized Compensation Expense. At June 28, 2019 , total unrecorded compensation expense associated with employee stock options expected to vest was approximately $29.6 million , which is expected to be recognized over a weighted-average period of 2.3 years. At June 28, 2019 , total unrecorded compensation expense associated with RSUs expected to vest was approximately $121.8 million , which is expected to be recognized over a weighted-average period of 2.5 years. Common Stock Repurchase Program In November 2009, we announced a stock repurchase program ("program"), providing for the repurchase of up to $250.0 million of our Class A common stock. The following table summarizes the initial amount of authorized repurchases as well as additional repurchases approved by our Board of Directors as of June 28, 2019 (in thousands): Authorization Period Authorization Amount Fiscal 2010: November 2009 $ 250,000 Fiscal 2010: July 2010 300,000 Fiscal 2011: July 2011 250,000 Fiscal 2012: February 2012 100,000 Fiscal 2015: October 2014 200,000 Fiscal 2017: January 2017 200,000 Fiscal 2018: July 2018 350,000 Total $ 1,650,000 Stock repurchases under the program may be made through open market transactions, negotiated purchases, or otherwise, at times and in amounts that we consider appropriate. The timing of repurchases and the number of shares repurchased depend upon a variety of factors, including price, regulatory requirements, the rate of dilution from our equity compensation plans, and other market conditions. The program does not have a specified expiration date, and can be limited, suspended or terminated at our discretion at any time without prior notice. Shares repurchased under the program will be returned to the status of authorized but unissued shares of Class A common stock. As of June 28, 2019 , the remaining authorization to purchase additional shares is approximately $65 million . The following table provides information regarding share repurchase activity under the program during fiscal 2019 : Quarterly Repurchase Activity Shares Repurchased Cost in thousands (1) Average Price Paid Per Share (2) Q1 - Quarter ended December 28, 2018 1,642,107 $ 112,570 $ 68.54 Q2 - Quarter ended March 29, 2019 1,318,250 85,351 64.73 Q3 - Quarter ended June 28, 2019 1,405,065 88,653 63.08 Total 4,365,422 $ 286,574 (1) Cost of share repurchases includes the price paid per share and applicable commissions. (2) Average price paid per share excludes commission costs. Dividend Program The following table summarizes dividends declared under the program in relation to fiscal 2019 : Fiscal Period Announcement Date Record Date Payment Date Cash Dividend Per Common Share Dividend Payment Fiscal 2019 Q1 - Quarter ended December 28, 2018 January 30, 2019 February 12, 2019 February 21, 2019 $ 0.19 $19.5 million Q2 - Quarter ended March 29, 2019 May 1, 2019 May 14, 2019 May 22, 2019 $ 0.19 $19.3 million Q3 - Quarter ended June 28, 2019 August 1, 2019 August 12, 2019 August 20, 2019 $ 0.19 $19.1 million (1) (1) The amount of the dividend payment is estimated based on the number of shares of our Class A and Class B common stock that we estimate will be outstanding as of the Record Date.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Jun. 28, 2019
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income Other comprehensive income consists of three components: unrealized gains or losses on our AFS marketable investment securities, gains and losses on derivatives in cash flow hedge relationships not yet recognized in earnings, and the gains and losses from the translation of assets and liabilities denominated in non-U.S. dollar functional currencies. Until realized and reported as a component of net income, these comprehensive income items accumulate and are included within accumulated other comprehensive income, a subsection within stockholders’ equity in our consolidated balance sheets. Unrealized gains and losses on our investment securities are reclassified from AOCI into earnings when realized upon sale and are determined based on specific identification of securities sold. Unrealized gains and losses on our cash flow hedges are reclassified from AOCI into earnings when the hedged operating expenses are recognized. The following table summarizes the changes in the accumulated balances during the period, and includes information regarding the manner in which the reclassifications out of AOCI into earnings affect our consolidated statements of operations (in thousands): Fiscal Quarter Ended Fiscal Year-To-Date Ended Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Beginning Balance $ (80 ) $ — $ (14,603 ) $ (14,683 ) $ (2,948 ) $ — $ (12,884 ) $ (15,832 ) Other comprehensive income before reclassifications: Unrealized gains/(losses) 2,095 139 — 2,234 4,905 139 — 5,044 Foreign currency translation gains/(losses) (1) — — (1,865 ) (1,865 ) — — (3,584 ) (3,584 ) Income tax effect - benefit/(expense) (60 ) — — (60 ) 39 — — 39 Net of tax 2,035 139 (1,865 ) 309 4,944 139 (3,584 ) 1,499 Amounts reclassified from AOCI into earnings: Realized gains/(losses) (1) (147 ) (5 ) — (152 ) (213 ) (5 ) — (218 ) Income tax effect - benefit/(expense) (2) 30 — — 30 55 — — 55 Net of tax (117 ) (5 ) — (122 ) (158 ) (5 ) — (163 ) Net current-period other comprehensive income/(loss) 1,918 134 (1,865 ) 187 4,786 134 (3,584 ) 1,336 Ending Balance $ 1,838 $ 134 $ (16,468 ) $ (14,496 ) $ 1,838 $ 134 $ (16,468 ) $ (14,496 ) Fiscal Quarter Ended Fiscal Year-To-Date Ended Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Beginning Balance $ (3,529 ) $ — $ (2,087 ) $ (5,616 ) $ (377 ) $ — $ (7,376 ) $ (7,753 ) Other comprehensive income before reclassifications: Unrealized gains/(losses) 490 — — 490 (2,599 ) — — (2,599 ) Foreign currency translation gains/(losses) (1) — — (9,275 ) (9,275 ) — — (2,845 ) (2,845 ) Income tax effect - benefit/(expense) (21 ) — 1,251 1,230 82 — 110 192 Net of tax 469 — (8,024 ) (7,555 ) (2,517 ) — (2,735 ) (5,252 ) Amounts reclassified from AOCI into earnings: Realized gains/(losses) (1) (162 ) — — (162 ) (369 ) — — (369 ) Income tax effect - benefit/(expense) (2) 32 — — 32 73 — — 73 Net of tax (130 ) — — (130 ) (296 ) — — (296 ) Net current-period other comprehensive income/(loss) 339 — (8,024 ) (7,685 ) (2,813 ) — (2,735 ) (5,548 ) Ending Balance $ (3,190 ) $ — $ (10,111 ) $ (13,301 ) $ (3,190 ) $ — $ (10,111 ) $ (13,301 ) (1) Realized gains or losses, if any, from the sale of our AFS investment securities or from foreign currency translation adjustments are included within other income/expense, net in our consolidated statements of operations. Realized gains or losses on cash flow hedges are included in operating expenses together with the hedged item. (2) The income tax benefit or expense is included within provision for income taxes in our consolidated statements of operations.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Earnings Per Share	. Earnings Per Share Basic EPS is computed by dividing net income attributable to Dolby Laboratories, Inc. by the number of weighted-average shares of Class A and Class B common stock outstanding during the period. Through application of the treasury stock method, diluted EPS is computed in the same manner, except that the number of weighted-average shares outstanding is increased by the number of potentially dilutive shares from employee incentive plans during the period. Basic and diluted EPS are computed independently for each fiscal quarter and year-to-date period, which involves the use of different weighted-average share count figures relating to quarterly and annual periods. As a result, and after factoring the effect of rounding to the nearest cent per share, the sum of all four quarter-to-date EPS figures may not equal year-to-date EPS. Potentially dilutive shares represent the hypothetical number of incremental shares issuable under the assumed exercise of outstanding stock options (both vested and non-vested) and vesting of outstanding RSUs. The calculation of dilutive shares outstanding excludes out-of-the-money stock options. The following table sets forth the computation of basic and diluted EPS attributable to Dolby Laboratories, Inc. (in thousands, except per share amounts): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, 2018 (as adjusted) June 28, June 29, 2018 (as adjusted) Numerator: Net income attributable to Dolby Laboratories, Inc. $ 39,574 $ 3,116 $ 211,233 $ 15,030 Denominator: Weighted-average shares outstanding—basic 101,218 103,836 102,012 103,386 Potential common shares from options to purchase common stock 1,829 2,198 2,006 2,364 Potential common shares from restricted stock units 670 916 1,007 1,193 Weighted-average shares outstanding—diluted 103,717 106,950 105,025 106,943 Net income per share attributable to Dolby Laboratories, Inc.: Basic $ 0.39 $ 0.03 $ 2.07 $ 0.15 Diluted $ 0.38 $ 0.03 $ 2.01 $ 0.14 Antidilutive awards excluded from calculation: Stock options 2,610 1,292 2,277 950 Restricted stock units 37 44 1 16

Income Taxes

Income Taxes	9 Months Ended
	Jun. 28, 2019
Income Tax Disclosure [Abstract]
Income Taxes	. Income Taxes Our income tax expense, deferred tax assets and liabilities, and reserves for unrecognized tax benefits reflect management's best assessment of estimated current and future taxes to be paid. We are subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgments and estimates are required in determining the consolidated income tax expense. Tax Act Enacted in 2017 On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Act. The Tax Act made broad and complex changes to the U.S. tax code, including, but not limited to, (1) reducing the U.S. federal corporate income tax rate from 35 percent to 21 percent ; (2) requiring companies to pay a one-time transition tax on certain unrepatriated earnings of foreign subsidiaries; (3) generally eliminating U.S. federal corporate income taxes on dividends from foreign subsidiaries; (4) capitalizing specific R&D expenses which are amortized over five to 15 years; and (5) other changes to how foreign and domestic earnings are taxed. Our accounting for the impact of the Tax Act was completed in the first quarter of fiscal 2019 in accordance with the Staff Accounting Bulletin No. 118 measurement period. As of September 28, 2018, we had recorded a provisional amount for the Tax Act of $121.4 million . During the period ended December 28, 2018, we recorded a $36.0 million reduction to our provisional Tax Act amount resulting primarily from completion of our evaluation of the income tax effects of indirect taxes related to the Deemed Repatriation Transition Tax ("Transition Tax") on our deferred tax assets. During the quarter ended March 29, 2019, the U.S. Department of the Treasury issued final regulations on the Transition Tax related to deemed paid foreign taxes eliminating a benefit we previously expected to realize. As a result, we recorded an additional $19.0 million tax expense. During the quarter ended June 28, 2019, we recorded a $2.3 million reduction related to the impact of the Tax Act. The final amount recorded for the Tax Act was $102.1 million as of the period ended June 28, 2019, which reflects the $121.4 million recorded as of September 28, 2018, reduced by $36 million as of December 28, 2018, increased by $19 million as of March 29, 2019, and reduced by $2.3 million as of June 28, 2019. There may be additional tax effects of the Tax Act that may change the final recorded tax expense associated with the Tax Act upon finalization of the law, regulations, and additional guidance. We have included the impact of new provisions effective in our fiscal 2019 in our effective tax rate. The Tax Act imposes a minimum tax on certain foreign earnings ("minimum foreign tax") in the year earned. Our accounting policy is to treat the minimum foreign tax as a current expense in the year incurred and have not provided deferred taxes on temporary differences related to such minimum foreign tax. As a result of the adoption of ASC 606, we reduced our deferred tax assets by $26.3 million at the beginning of our first quarter of fiscal 2019. Unrecognized Tax Benefit As of June 28, 2019 , the total amount of gross unrecognized tax benefits was $107.5 million , of which $72.7 million , if recognized, would reduce our effective tax rate. As of September 28, 2018 , the total amount of gross unrecognized tax benefits was $102.0 million , of which $96.9 million , if recognized, would reduce our effective tax rate. Our net liability for unrecognized tax benefits is classified within other non-current liabilities in our consolidated balance sheets. Effective Tax Rate Each period, a combination of different factors can impact our effective tax rate. These factors include both recurring items such as tax rates and the relative amount of income earned in foreign jurisdictions, as well as discrete items such as changes to our uncertain tax positions, that may occur in, but are not necessarily consistent between periods. Our effective tax rate in the third quarter of fiscal 2019 was 5.2% or a tax expense of $2.2 million, compared to our Federal statutory rate of 21%. The decrease from the Federal statutory rate was primarily due to discrete benefits resulting from the completion of a R&D tax credit study as well as updates to the Transition Tax discussed above. Compared to our effective tax rate in the third quarter of fiscal 2018 of 156.1% or a tax benefit of $9.1 million, the increase in our tax expense was primarily due to the reduction in revenue and corresponding profitability in the third quarter of fiscal 2018 as a result of ASC 606. See Note 2 " Summary of Significant Accounting Policies " . Our effective tax rate in the third quarter of fiscal 2019 year-to-date period was 6.4% or a tax expense of $14.5 million, compared to our Federal statutory rate of 21%. The decrease from the Federal statutory rate was primarily due to updates to the Transition Tax discussed above, as well as discrete benefits from both stock-based compensation and the completion of a R&D tax credit study. Compared to our effective tax rate in our third quarter of fiscal 2018 year-to-date period of 91.3% or a tax expense of $163.1 million, the increase in our tax expense was primarily due to the impact of the Tax Act in the prior year.

Restructuring

Restructuring	9 Months Ended
	Jun. 28, 2019
Restructuring Charges [Abstract]
Restructuring	Restructuring Restructuring charges recorded in our statements of operations represent costs associated with separate individual restructuring plans implemented in various fiscal periods. Costs arising from these actions, including fluctuations in related balances between fiscal periods, are based on the nature of activities under the various plans. Fiscal 2019 Restructuring Events. In the third quarter of fiscal 2019, we recorded charges associated with our exit of a leased facility. In addition, we recorded charges incurred in relation to a strategic restructuring program implemented in the third quarter of fiscal 2019 to reorganize certain activities and responsibilities within our marketing function. These charges were primarily related to severance and other related benefits provided to the affected employees. By the end of the calendar year, we expect these restructuring plans to be substantially complete. As a result of these events, we recorded a total of $30.3 million in restructuring costs for the fiscal quarter and year-to-date period ended June 28, 2019 and reflected as such in the accompanying consolidated statement of operations. The table presented below summarizes changes in restructuring accruals under these plans (in thousands): Severance Leased facility exit costs Fixed assets write-off Other associated costs Total Balance at September 28, 2018 $ — $ — $ — $ 124 $ 124 Restructuring charges 2,854 12,247 15,216 (53 ) 30,264 Cash payments (528 ) (130 ) (658 ) Non-cash and other adjustments 2,039 (15,216 ) 59 (13,118 ) Balance at June 28, 2019 $ 2,326 $ 14,286 $ — $ — $ 16,612 Accruals for restructuring charges incurred for the restructuring plans described above are included within accrued liabilities in our consolidated balance sheets while restructuring charges/(credits) are included within restructuring charges/(credits) in our condensed consolidated statements of operations.

Legal Proceedings

Legal Proceedings	9 Months Ended
	Jun. 28, 2019
Loss Contingency, Information about Litigation Matters [Abstract]
Legal Proceedings	. Legal Matters We are involved in various legal proceedings that occasionally arise in the normal course of business. These can include claims of alleged infringement of IP rights, commercial, employment, and other matters. In our opinion, resolution of these proceedings is not expected to have a material adverse impact on our operating results or financial condition. Given the unpredictable nature of legal proceedings, it is possible that an unfavorable resolution of one or more such proceedings could materially affect our future operating results or financial condition in a particular period, including as a result of required changes to our licensing terms, monetary penalties, and other potential consequences. However, based on the information known by us as of the date of this filing, any such amounts are either immaterial, or it is not feasible to provide an estimate of any such potential loss. and the rules and regulations applicable to the preparation of our consolidated financial statements, any such amounts are either immaterial, or it is not possible to provide an estimate of any such potential losses.

Commitments And Contingencies

Commitments And Contingencies	9 Months Ended
	Jun. 28, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	. Commitments & Contingencies In the ordinary course of business, we enter into contractual agreements with third parties that include non-cancelable payment obligations, for which we are liable in future periods. These arrangements can include terms binding us to minimum payments and/or penalties if we terminate the agreement for any reason other than an event of default as described by the agreement. The following table presents a summary of our contractual obligations and commitments as of June 28, 2019 (in thousands): Payments Due By Fiscal Period Remainder of Fiscal 2019 Fiscal Fiscal Fiscal Fiscal Thereafter Total Naming rights $ — $ 7,909 $ 8,008 $ 8,108 $ 8,209 $ 78,656 $ 110,890 Operating leases 5,237 13,202 8,838 6,784 5,847 15,897 55,805 Purchase obligations 22,240 25,260 2,819 380 — — 50,699 Donation commitments 3,531 2,341 141 141 141 1,200 7,495 Total $ 31,008 $ 48,712 $ 19,806 $ 15,413 $ 14,197 $ 95,753 $ 224,889 Naming Rights. We are party to an agreement for naming rights and related benefits with respect to the Dolby Theatre in Hollywood, California, the location of the Academy Awards®. The term of the agreement is 20 years, over which we will make payments on a semi-annual basis until fiscal 2032. Our payment obligations are conditioned in part on the Academy Awards being held and broadcast from the Dolby Theatre. Operating Leases . Operating lease payments represent our commitments for future minimum rent made under non-cancelable leases for office space, including those payable to our principal stockholder and portions attributable to the controlling interests in our wholly owned subsidiaries. Purchase Obligations. Purchase obligations primarily consist of our commitments made under agreements to purchase goods and services related to Dolby Cinema and for purposes that include IT and telecommunications, marketing and professional services, and manufacturing and other R&D activities. Donation Commitments. Our donation commitments relate to non-cancelable obligations to the Museum of the Academy of Motion Picture Arts and Sciences in Los Angeles, California, and the Smithsonian Institution in Washington, DC. Our commitment to the Museum of the Academy of Motion Picture Arts and Sciences is for 15 years from its expected opening date in fiscal 2019 , and the Smithsonian Institution is for the next 5 years. Both donation commitments consist of the installation of imaging and audio products in its theaters and providing maintenance services in exchange for various marketing, branding, and publicity benefits. Indemnification Clauses. On a limited basis, our contractual agreements contain a clause under which we agree to provide indemnification to the counterparty, most commonly to licensees in connection with licensing arrangements that include our IP. We have also entered into indemnification agreements with our officers, directors, and certain employees, and our certificate of incorporation and bylaws contain similar indemnification obligations. Additionally, and although not a contractual requirement, we have at times elected to defend our licensees from third party IP infringement claims. Since the terms and conditions of our contractual indemnification clauses do not explicitly specify our obligations, we are unable to reasonably estimate the maximum potential exposure for which we could be liable. Furthermore, we have not historically made any payments in connection with any such obligation and believe there to be a remote likelihood that any potential exposure in future periods would be of a material amount. As a result, no amounts have been accrued in our consolidated financial statements with respect to the contingent aspect of these indemnities.

Subsequent Events

Subsequent Events	9 Months Ended
	Jun. 28, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events

Summary Of Significant Accoun_2

Summary Of Significant Accounting Policies (Policy)	9 Months Ended
	Jun. 28, 2019
Accounting Policies [Abstract]
Principles Of Consolidation	Principles of Consolidation The unaudited interim condensed consolidated financial statements include the accounts of Dolby Laboratories, Inc. and our wholly owned subsidiaries. In addition, we have consolidated the financial results of jointly owned affiliated companies in which our principal stockholder has a controlling interest. We report these controlling interests as a separate line in our consolidated statements of operations as net income attributable to controlling interest and in our consolidated balance sheets as a controlling interest. We eliminate all intercompany accounts and transactions upon consolidation.
Operating Segments	Operating Segments Since we operate as a single reporting segment, all required financial segment information is included in our unaudited interim condensed consolidated financial statements. This reflects the fact that our CODM, our Chief Executive Officer, evaluates our financial information and resources, and assesses the performance of these resources on a consolidated basis.
Use of Estimates	Use of Estimates The preparation of our financial statements in accordance with U.S. GAAP requires management to make certain estimates and assumptions that affect the amounts reported and disclosed in our unaudited interim condensed consolidated financial statements and accompanying notes. Significant items subject to such estimates and assumptions include estimated shipments by our licensees for which we are owed a sales–based royalty, estimated selling prices for performance obligations within revenue arrangements; valuation allowances for accounts receivable; carrying values of inventories and certain property, plant, and equipment, goodwill and intangible assets; fair values of investments; accrued liabilities including liabilities for unrecognized tax benefits, deferred income tax assets and liabilities, and stock-based compensation. Actual results could differ from our estimates.
Fiscal Year	Fiscal Year Our fiscal year is a 52 or 53 week period ending on the last Friday in September. The fiscal periods presented herein include the 13 week periods ended June 28, 2019 and June 29, 2018 . Our fiscal year ending September 27, 2019 (fiscal 2019 ) and our fiscal year ended September 28, 2018 (fiscal 2018 ) both consist of 52 weeks.
Reclassifications	Reclassifications
Recently Issued Accounting Policies	Recently Issued Accounting Standards Adopted Standards At the beginning of fiscal 2019, we adopted the following standards: Revenue Recognition . We adopted ASU 2014-09, Revenue from Contracts with Customers ("ASC 606"), which outlines a comprehensive revenue recognition model. The standard requires revenue recognition to account for the transfer of promised goods or services to customers in an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services, and in our case, requires the use of more judgment and estimates than the previous accounting requirements. ASC 606 also includes Subtopic 340-40, Other Assets and Deferred Costs - Contracts with Customers , under which the incremental costs associated with obtaining a contract are required to be capitalized and amortized as expense as the contract’s performance obligations are satisfied. We do not capitalize sales commission costs because our performance obligations on which we pay commissions are complete at contract execution. We adopted ASC 606 utilizing the full retrospective method of transition which requires a recast of each prior reporting period presented. The most significant impacts of adopting ASC 606 are as follows: • We estimate and record per-unit royalty-based revenue earned from our licensees’ shipments in the same period in which those shipments occur, instead of recognizing our per-unit royalty-based revenue in the quarter in which it is reported to us by our licensees, which is generally in the quarter after those shipments have occurred. To the extent that our revenues are influenced by seasonal trends, the trends will impact revenue one fiscal quarter earlier than was previously the case; • We record a favorable or unfavorable adjustment based on the difference between estimated and actual sales when we receive reporting of sales–based royalties on royalty statements from the licensees, generally in the subsequent fiscal quarter; • For certain transactions that have extended payment and minimum commitment terms with no further performance obligations, we recognize licensing revenues on the later of contract execution or effective date regardless of when the amounts are due and payable; • We recorded a one-time adjustment of $174.4 million to the period ending September 29, 2018 retained earnings to reflect the full impact of the accounting upon adoption. We adjusted our condensed consolidated financial statements from amounts previously reported to reflect the adoption of the new standard. Select unaudited condensed consolidated statement of income line items, which reflect the adoption of the new standard, are as follows (in thousands, except per share data): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) Revenue $ 317,447 $ (102,667 ) $ 214,780 $ 906,599 $ (92,570 ) $ 814,029 Gross margin 282,982 (102,585 ) 180,397 810,299 (92,573 ) 717,726 Provision for income taxes (13,302 ) 22,369 9,067 (198,332 ) 35,262 (163,070 ) Net income attributable to Dolby Laboratories, Inc. 83,145 (80,029 ) 3,116 72,154 (57,124 ) 15,030 Diluted earnings per share $ 0.78 $ (0.75 ) $ 0.03 $ 0.67 $ (0.53 ) $ 0.14 Select condensed consolidated balance sheet line items, which reflect the adoption of the new standard, are as follows (in thousands): September 28, 2018 (as previously reported) Effect of Adopting ASC 606 September 28, 2018 (as adjusted) ASSETS Accounts receivable, net $ 137,151 $ 28,982 $ 166,133 Contract assets — 165,959 165,959 Prepaid expenses and other current assets 35,209 (319 ) 34,890 Deferred taxes 101,070 (26,304 ) 74,766 Other non-current assets 42,280 37,800 80,080 LIABILITIES AND STOCKHOLDERS' EQUITY Accrued liabilities 223,594 19,534 243,128 Contract liabilities 23,931 (6,463 ) 17,468 Non-current contract liabilities 40,064 (14,177 ) 25,887 Other non-current liabilities 150,960 32,839 183,799 Retained earnings 2,139,154 174,385 2,313,539 Select condensed consolidated statement of cash flows line items, which reflect the adoption of the new standard, are as follows (in thousands): Fiscal Year-To-Date June 29, 2018 (as previously reported)¹ Effect of Adopting ASC 606 Fiscal Year-To-Date June 29, 2018 (as adjusted) Operating activities: Net income including controlling interest $ 72,575 $ (57,124 ) $ 15,451 Adjustments to reconcile net income to net cash provided by operating activities: Deferred income taxes 47,145 (31,982 ) 15,163 Changes in operating assets and liabilities: Accounts receivable (78,480 ) 80,455 1,975 Contract assets — 12,897 12,897 Prepaid expenses and other assets (13,719 ) 1 (13,718 ) Accounts payable and other liabilities (12,781 ) (3,587 ) (16,368 ) Contract liabilities (366 ) (472 ) (838 ) Net cash provided by operating activities 240,471 — 240,471 ¹ Previously reported statement of cash flows in the table above reflects the adoption of ASU 2016-18. The impact to our previously reported condensed consolidated statement of cash flows is not material. Refer to disclosure below for further detail. In our adoption and as allowed by ASC 606, we: • used the transaction price at the date on which the contract was completed rather than estimating variable consideration amounts in the comparative reporting period; • did not disclose the amount of the transaction price allocated to the remaining performance obligations or provide an explanation of when we expect to recognize that amount as revenue for reporting periods presented before the date of initial adoption; • reflected the aggregate effect of contract modifications in accounting for the contracts open as of the earliest reporting period presented; • did not adjust transaction prices for the effects of a significant financing component, if at contract inception, we expected the period between customer payment and the transfer of goods or services to be one year or less. We adopted Accounting Standards Update No. 2016-08, Revenue from Contracts with Customers ("ASC 606"), Principal versus Agent Considerations (Reporting Revenue Gross versus Net) ("ASU 2016-08"), which amended the principal-versus-agent implementation guidance and illustrations in ASU 2014-09. ASU 2016-08 clarifies that an entity should evaluate when it is the principal or agent for each specified good or service promised in a contract with a customer. We evaluated our contracts executed with and on our behalf with Via Licensing Corporation, our wholly-owned subsidiary that manages patent pools on behalf of third party patent owners and concluded that Via performs its functions as an agent to the patent pool licensors, which includes Dolby. Accordingly, we recognize our administrative fees and royalties net of the consideration paid to the patent licensors in the pool . Cash Flow Classification. During the first quarter of fiscal 2019, we adopted ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments . The new standard addresses eight specific cash flow issues related to the classification and presentation of cash receipts and payments in the statement of cash flows. The adoption of these updates did not have a material impact on Dolby’s consolidated financial statements. Income Taxes: Intra-Entity Asset Transfers. During the first quarter of fiscal 2019, we adopted ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory . The new standard requires the recognition of the income tax consequences of an intercompany asset transfer, other than transfers of inventory, when the transfer occurs. For intercompany transfers of inventory, the income tax effects will continue to be deferred until the inventory has been sold to a third party. The adoption of the guidance did not have a material impact on Dolby's consolidated financial statements. Restricted Cash. During the first quarter of fiscal 2019, we adopted ASU 2016-18, Restricted Cash - a consensus of the FASB Emerging Issues Task Force , which clarifies how entities should present restricted cash and restricted cash equivalents in the statement of cash flows. The new standard requires entities to show the changes in the total of cash, cash equivalents, restricted cash and restricted cash equivalents in the statement of cash flows. We adopted the new guidance using the retrospective transition approach. The reclassified restricted cash balances from investing activities to changes in cash, cash equivalents, and restricted cash on the condensed consolidated statements of cash flows were not material for all periods presented. The adjusted condensed consolidated statement of cash flows for the prior comparative period has been reclassified as a result of the adoption of the new standard. Accounting for Hedging Activities. During the first quarter of fiscal 2019, we adopted ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities . The new standard eliminates the requirement to separately measure and report hedge ineffectiveness. In the third quarter of fiscal 2019, we implemented a cash flow hedging program using forward currency contracts. This standard applies to the presentation and disclosure of the cash flow hedging program, which was not material in relation to our consolidated financial statements as a whole. The adoption of the standard did not have a material impact on Dolby's consolidated financial statements. Standards Not Yet Effective Leases. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) , which amends the existing accounting standards for leases. Under the new standard, a lessee will be required to recognize a lease liability and right-of-use asset for most leases. The new standard also modifies the classification criteria and accounting for sales-type and direct financing leases, and requires additional disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. We will adopt the new standard using the modified retrospective transition method, thereby recognizing the cumulative effect of initially applying Topic 842 as an adjustment to opening retained earnings on the adoption date, without revising the balances in comparative periods. Upon adoption, we will recognize a lease liability and right-of-use asset for each of our lease arrangements. We anticipate adoption of the standard will not have a material impact on our consolidated income statements. We plan to elect to utilize the transition guidance within the new standard which allows us to retain the historical lease classification and initial direct costs for any leases that exist prior to adoption of the standard. We will not reassess whether any contracts entered into prior to adoption are leases. We are in the process of evaluating our existing lease contracts and implementing changes to our systems. ASU 2016-02 is effective for Dolby beginning September 28, 2019. Income Taxes: Comprehensive Income. On December 22, 2017, the U.S. government enacted comprehensive tax legislation commonly referred to as the Tax Cuts and Jobs Act ("Tax Act"). In February 2018, the FASB issued ASU 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income, which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Act and requires entities to provide certain disclosures regarding stranded tax effects. The ASU is effective for Dolby beginning September 28, 2019, and we do not currently plan to early adopt. We are currently evaluating the timing and impact of the standard on our consolidated financial statements. Collaborative Arrangements. In November 2018, the FASB issued ASU 2018-18, Collaborative Arrangements (Topic 808): Clarifying the Interaction between Topic 808 and Topic 606 , which clarifies that certain transactions between participants in a collaborative arrangement should be accounted for under ASC 606 when the counterparty is a customer. In addition, ASU 2018-18 precludes an entity from presenting consideration from a transaction in a collaborative arrangement as revenue from contracts with customers if the counterparty is not a customer for that transaction. This standard will be effective for Dolby beginning September 29, 2020, and we do not currently plan to early adopt. We do not believe that this standard will have a material impact on our consolidated financial statements.

Summary Of Significant Accoun_3

Summary Of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Jun. 28, 2019
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	We adjusted our condensed consolidated financial statements from amounts previously reported to reflect the adoption of the new standard. Select unaudited condensed consolidated statement of income line items, which reflect the adoption of the new standard, are as follows (in thousands, except per share data): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) June 29, 2018 (as previously reported) Effect of Adopting ASC 606 June 29, 2018 (as adjusted) Revenue $ 317,447 $ (102,667 ) $ 214,780 $ 906,599 $ (92,570 ) $ 814,029 Gross margin 282,982 (102,585 ) 180,397 810,299 (92,573 ) 717,726 Provision for income taxes (13,302 ) 22,369 9,067 (198,332 ) 35,262 (163,070 ) Net income attributable to Dolby Laboratories, Inc. 83,145 (80,029 ) 3,116 72,154 (57,124 ) 15,030 Diluted earnings per share $ 0.78 $ (0.75 ) $ 0.03 $ 0.67 $ (0.53 ) $ 0.14 Select condensed consolidated balance sheet line items, which reflect the adoption of the new standard, are as follows (in thousands): September 28, 2018 (as previously reported) Effect of Adopting ASC 606 September 28, 2018 (as adjusted) ASSETS Accounts receivable, net $ 137,151 $ 28,982 $ 166,133 Contract assets — 165,959 165,959 Prepaid expenses and other current assets 35,209 (319 ) 34,890 Deferred taxes 101,070 (26,304 ) 74,766 Other non-current assets 42,280 37,800 80,080 LIABILITIES AND STOCKHOLDERS' EQUITY Accrued liabilities 223,594 19,534 243,128 Contract liabilities 23,931 (6,463 ) 17,468 Non-current contract liabilities 40,064 (14,177 ) 25,887 Other non-current liabilities 150,960 32,839 183,799 Retained earnings 2,139,154 174,385 2,313,539 Select condensed consolidated statement of cash flows line items, which reflect the adoption of the new standard, are as follows (in thousands): Fiscal Year-To-Date June 29, 2018 (as previously reported)¹ Effect of Adopting ASC 606 Fiscal Year-To-Date June 29, 2018 (as adjusted) Operating activities: Net income including controlling interest $ 72,575 $ (57,124 ) $ 15,451 Adjustments to reconcile net income to net cash provided by operating activities: Deferred income taxes 47,145 (31,982 ) 15,163 Changes in operating assets and liabilities: Accounts receivable (78,480 ) 80,455 1,975 Contract assets — 12,897 12,897 Prepaid expenses and other assets (13,719 ) 1 (13,718 ) Accounts payable and other liabilities (12,781 ) (3,587 ) (16,368 ) Contract liabilities (366 ) (472 ) (838 ) Net cash provided by operating activities 240,471 — 240,471 ¹ Previously reported statement of cash flows in the table above reflects the adoption of ASU 2016-18. The impact to our previously reported condensed consolidated statement of cash flows is not material. Refer to disclosure below for further detail.

Revenue Recognition (Tables)

Revenue Recognition (Tables)	9 Months Ended
	Jun. 28, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table presents a summary of the composition of our revenue for all periods presented: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Revenue (as adjusted) (as adjusted) Licensing $ 271,897 90 % $ 183,771 86 % $ 842,484 89 % $ 726,078 89 % Products and services 30,262 10 % 31,009 14 % 100,309 11 % 87,951 11 % Total revenue $ 302,159 100 % $ 214,780 100 % $ 942,793 100 % $ 814,029 100 % The following table presents the composition of our licensing revenue for all periods presented: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Market (as adjusted) (as adjusted) Broadcast $ 134,106 49 % $ 83,760 46 % $ 356,668 42 % $ 283,027 39 % Mobile 47,034 17 % 19,596 11 % 147,966 18 % 146,473 20 % CE 28,662 11 % 27,935 15 % 117,188 14 % 103,645 14 % PC 24,579 9 % 16,530 9 % 88,929 11 % 80,786 11 % Other 37,516 14 % 35,950 19 % 131,733 15 % 112,147 16 % Total licensing revenue $ 271,897 100 % $ 183,771 100 % $ 842,484 100 % $ 726,078 100 % We license our technologies in approximately 50 countries, and our licensees distribute products that incorporate our technologies throughout the world. As shown in the table below, we generate the majority of our revenue from outside the United States. Geographic data for our licensing revenue is based on the location of our licensees’ headquarters, products revenue is based on the destination to which we ship our products, and services revenue is based on the location where services are performed. Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, 2019 June 29, 2018 June 28, 2019 June 29, 2018 Revenue By Geographic Location (as adjusted) (as adjusted) United States $ 78,590 26 % $ 63,691 30 % $ 356,389 38 % $ 268,505 33 % International 223,569 74 % 151,089 70 % 586,404 62 % 545,524 67 % Total revenue $ 302,159 100 % $ 214,780 100 % $ 942,793 100 % $ 814,029 100 %
Contract with Customer, Asset and Liability	The following table presents a summary of the balances to which contract assets and liabilities related to revenue are recorded for all periods presented: June 28, 2019 September 28, 2018 Change ($) Change (%) (as adjusted) Accounts receivable, net $ 231,185 $ 166,133 $ 65,052 39 % Contract assets 182,912 165,959 16,953 10 % Other non-current assets 100,550 80,080 20,470 26 % Contract liabilities - current 19,435 17,468 1,967 11 % Contract liabilities - non-current 24,428 25,887 (1,459 ) (6 )% Other non-current liabilities 186,765 183,799 2,966 2 %

Composition Of Certain Financ_2

Composition Of Certain Financial Statement Captions (Tables)	9 Months Ended
	Jun. 28, 2019
Composition Of Certain Financial Statement Captions [Abstract]
Schedule Of Accounts Receivable	Accounts Receivable June 28, September 28, 2018 (as adjusted) Trade accounts receivable $ 194,024 $ 108,929 Accounts receivable from patent administration program licensees 47,609 62,462 Accounts receivable, gross 241,633 171,391 Less: allowance for doubtful accounts (10,448 ) (5,258 ) Total $ 231,185 $ 166,133
Schedule Of Inventories	Inventories June 28, September 28, Raw materials $ 9,338 $ 6,095 Work in process 3,607 4,044 Finished goods 25,963 16,067 Total $ 38,908 $ 26,206
Schedule Of Prepaid Expenses And Other Current Assets	Prepaid Expenses And Other Current Assets June 28, September 28, 2018 (as adjusted) Prepaid expenses $ 20,348 $ 18,508 Other current assets 19,930 13,946 Income tax receivable 752 2,436 Total $ 41,030 $ 34,890
Schedule Of Accrued Liabilities	Accrued Liabilities June 28, September 28, 2018 (as adjusted) Accrued royalties $ 2,973 $ 2,648 Amounts payable to patent administration program partners 52,024 69,061 Accrued compensation and benefits 73,014 84,491 Accrued professional fees 15,154 9,749 Unpaid PP&E additions 4,631 13,956 Other accrued liabilities 95,942 63,223 Total $ 243,738 $ 243,128
Schedule Of Other Non-Current Liabilities	Other Non-Current Liabilities June 28, September 28, Supplemental retirement plan obligations $ 3,284 $ 3,388 Non-current tax liabilities 135,839 129,253 Other liabilities 47,642 51,158 Total $ 186,765 $ 183,799

Investments & Fair Value Meas_2

Investments & Fair Value Measurements (Tables)	9 Months Ended
	Jun. 28, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Abstract]
Schedule Of Financial Assets and Liabilities Carried At Fair Value	Our cash and investment portfolio consisted of the following (in thousands): June 28, 2019 Cost Unrealized Estimated Fair Value Gains Losses Total Level 1 Level 2 Level 3 Cash and cash equivalents: Cash $ 652,269 $ — $ — $ 652,269 $ 652,269 $ — $ — Cash equivalents: Certificate of deposit (1) 12,376 — — 12,376 — 12,376 — Commercial paper 13,051 2 — 13,053 — 13,053 — Corporate bonds 6,265 — (1 ) 6,264 — 6,264 — Money market funds 15,084 — — 15,084 15,084 — — Municipal debt securities 1,000 — — 1,000 — 1,000 — Government bonds 16,513 1 — 16,514 16,514 — — Cash and cash equivalents 716,558 3 (1 ) 716,560 683,867 32,693 — Short-term investments: Certificate of deposit (1) 1,486 1 — 1,487 — 1,487 — U.S. agency securities 6,272 10 (6 ) 6,276 — 6,276 — Government bonds 11,952 11 — 11,963 11,963 — — Commercial paper 6,472 13 — 6,485 — 6,485 — Corporate bonds 82,230 51 (112 ) 82,169 — 82,169 — Municipal debt securities 12,345 14 (2 ) 12,357 — 12,357 — Short-term investments 120,757 100 (120 ) 120,737 11,963 108,774 — Long-term investments: Asset backed securities 7,799 66 — 7,865 — 7,865 — U.S. agency securities 11,895 134 (19 ) 12,010 — 12,010 — Government bonds 21,871 177 (36 ) 22,012 22,012 — — Corporate bonds 154,196 1,563 (55 ) 155,704 — 155,704 — Municipal debt securities 11,809 103 (2 ) 11,910 — 11,910 — Other long-term investments (2) 1,851 — — 1,851 7 — — Long-term investments 209,421 2,043 (112 ) 211,352 22,019 187,489 — Total cash, cash equivalents, and investments $ 1,046,736 $ 2,146 $ (233 ) $ 1,048,649 $ 717,849 $ 328,956 $ — Investments held in supplemental retirement plan: Assets 3,382 — — 3,382 3,382 — — Included in prepaid expenses and other current assets & other non-current assets Liabilities 3,382 — — 3,382 3,382 — — Included in accrued liabilities & other non-current liabilities Currency derivatives as hedge instruments: Assets — 231 — 231 — 231 — Included in other current assets Liabilities — — (47 ) (47 ) — (47 ) — Included in other accrued expenses (1) Certificates of deposit include marketable securities, while those with a maturity in excess of one year as of June 28, 2019 are classified within long-term investments. (2) Other long-term investments as of June 28, 2019 include investments that are not carried at fair value including an equity method investment of $1.8 million September 28, 2018 Cost Unrealized Estimated Fair Value Gains Losses Total Level 1 Level 2 Level 3 Cash and cash equivalents: Cash $ 905,660 $ — $ — $ 905,660 $ 905,660 $ — $ — Cash equivalents: Commercial paper 5,058 — — 5,058 — 5,058 — Corporate bonds 1,005 — — 1,005 — 1,005 — Money market funds 3,301 — — 3,301 3,301 — — Municipal debt securities 545 — (1 ) 544 — 544 — Government bonds 2,495 — — 2,495 2,495 — — Cash and cash equivalents 918,064 — (1 ) 918,063 911,456 6,607 — Short-term investments: Certificate of deposit (1) 12,875 14 — 12,889 — 12,889 — U.S. agency securities 11,997 — (135 ) 11,862 — 11,862 — Government bonds 7,970 — (15 ) 7,955 7,955 — — Commercial paper 4,276 — — 4,276 — 4,276 — Corporate bonds 111,245 50 (494 ) 110,801 — 110,801 — Municipal debt securities 30,475 — (120 ) 30,355 — 30,355 — Short-term investments 178,838 64 (764 ) 178,138 7,955 170,183 — Long-term investments: U.S. agency securities 9,791 — (166 ) 9,625 — 9,625 — Government bonds 15,966 — (317 ) 15,649 15,649 — — Corporate bonds 146,561 33 (1,810 ) 144,784 — 144,784 — Municipal debt securities 17,235 — (112 ) 17,123 — 17,123 — Other long-term investments (2) 355 246 — 601 246 — — Long-term investments 189,908 279 (2,405 ) 187,782 15,895 171,532 — Total cash, cash equivalents, and investments $ 1,286,810 $ 343 $ (3,170 ) $ 1,283,983 $ 935,306 $ 348,322 $ — Investments held in supplemental retirement plan: Assets 3,486 — — 3,486 3,486 — — Included in prepaid expenses and other current assets & other non-current assets Liabilities 3,486 — — 3,486 3,486 — — Included in accrued liabilities & other non-current liabilities (1) Certificates of deposit include marketable securities, while those with a maturity in excess of one year as of September 28, 2018 are classified within long-term investments. (2) Other long-term investments as of September 28, 2018 include a marketable equity security of $0.2 million , and other investments that are not carried at fair value including an equity method investment of $0.4 million . During fiscal 2018, we recorded write-off charges to reduce the carrying value of two cost method equity investments to zero in recognition of an other-than-temporary impairment for each investment.
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	The following table presents the gross unrealized losses and fair value for those AFS securities that were in an unrealized loss position for less than twelve months and for twelve months or greater as of June 28, 2019 and September 28, 2018 (in thousands): June 28, 2019 September 28, 2018 Less Than 12 Months 12 Months Or Greater Less Than 12 Months 12 Months Or Greater Investment Type Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses Certificate of deposit $ 2,300 $ — $ — $ — $ — $ — $ — $ — U.S. agency securities 796 (3 ) 7,074 (22 ) — — 21,486 (302 ) Government bonds 16,649 (1 ) 8,647 (36 ) 16,633 (332 ) — — Commercial paper — — — — 5,737 (1 ) — — Corporate bonds 20,145 (30 ) 53,766 (137 ) 143,051 (1,680 ) 52,162 (624 ) Municipal debt securities 1,683 — 4,299 (3 ) 41,058 (191 ) 6,965 (41 ) Total $ 41,573 $ (34 ) $ 73,786 $ (198 ) $ 206,479 $ (2,204 ) $ 80,613 $ (967 )
Available-for-sale Securities	The following table summarizes the amortized cost and estimated fair value of the AFS securities within our investment portfolio based on stated maturities as of June 28, 2019 and September 28, 2018 , which are recorded within cash equivalents and both short and long-term investments in our consolidated balance sheets (in thousands): June 28, 2019 September 28, 2018 Range of maturity Amortized Cost Fair Value Amortized Cost Fair Value Due within 1 year $ 189,056 $ 189,039 $ 191,241 $ 190,541 Due in 1 to 2 years 125,979 126,737 122,131 120,545 Due in 2 to 3 years 77,591 78,764 67,423 66,637 Total $ 392,626 $ 394,540 $ 380,795 $ 377,723

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	9 Months Ended
	Jun. 28, 2019
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property, plant, and equipment are recorded at cost, with depreciation expense included in cost of licensing, cost of products and services, R&D, S&M, and G&A expenses in our consolidated statements of operations. PP&E consist of the following (in thousands): June 28, September 28, Land $ 41,950 $ 43,342 Buildings and building improvements 282,857 283,474 Leasehold improvements 67,748 66,866 Machinery and equipment 117,058 111,603 Computer equipment and software 217,087 194,079 Furniture and fixtures 30,807 30,556 Equipment provided under operating leases 156,047 139,201 Construction-in-progress 13,901 7,342 Property, plant, and equipment, gross 927,455 876,463 Less: accumulated depreciation (402,814 ) (362,281 ) Property, plant, & equipment, net $ 524,641 $ 514,182

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Jun. 28, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table outlines changes to the carrying amount of goodwill (in thousands): Goodwill Balance at September 28, 2018 $ 327,982 Acquired goodwill (1) 9,173 Translation adjustments (1,219 ) Balance at June 28, 2019 $ 335,936
Schedule of Finite-Lived Intangible Assets	Intangible assets subject to amortization consist of the following (in thousands): June 28, 2019 September 28, 2018 Intangible Assets Cost Accumulated Amortization Net Cost Accumulated Amortization Net Acquired patents and technology $ 338,920 $ (170,722 ) $ 168,198 $ 319,082 $ (152,775 ) $ 166,307 Customer relationships 63,223 (43,282 ) 19,941 58,342 (41,012 ) 17,330 Other intangibles 24,463 (23,298 ) 1,165 22,742 (22,360 ) 382 Total $ 426,606 $ (237,302 ) $ 189,304 $ 400,166 $ (216,147 ) $ 184,019 With regard to our purchase of intangible assets during the periods presented, the following table summarizes the consideration paid, the weighted-average useful lives over which the acquired assets will be amortized using the greater of either the straight-line basis or a ratio-to-revenue method, and the classification of their amortized expense in our consolidated statements of operations: Fiscal Period Total Purchase Consideration (1) Weighted-Average Useful Life (in millions) (in years) Fiscal 2018 Q1 - Quarter ended December 29, 2017 $12.0 14.1 Q2 - Quarter ended March 30, 2018 $2.8 5.3 Q3 - Quarter ended June 29, 2018 $0.7 5.0 $15.5 12.1 Fiscal 2019 Q1 - Quarter ended December 28, 2018 $12.1 11.6 Q2 - Quarter ended March 29, 2019 $5.0 4.0 Q3 - Quarter ended June 28, 2019 $10.2 5.4 $27.3 7.9 (1) Amortization expense on the intangible assets from patent portfolio and business acquisitions is included within cost of revenue, R&D, and G&A in our consolidated statements of operations.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	As of June 28, 2019 , estimated amortization expense in future fiscal periods was as follows (in thousands): Fiscal Year Amortization Expense (in thousands) Remainder of 2019 $ 8,204 2020 31,568 2021 30,974 2022 28,280 2023 24,325 Thereafter 65,953 Total $ 189,304

Stockholders' Equity And Stoc_2

Stockholders' Equity And Stock-Based Compensation (Tables)	9 Months Ended
	Jun. 28, 2019
Stockholders' Equity And Stock-Based Compensation [Abstract]
Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan	The following table summarizes information about all stock options issued under our 2005 Stock Plan: Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life Aggregate Intrinsic Value (1) (in thousands) (in years) (in thousands) Options outstanding at September 28, 2018 7,365 $ 43.51 Grants 1,245 64.60 Exercises (842 ) 35.92 Forfeitures and cancellations (141 ) 52.35 Options outstanding at June 28, 2019 7,627 47.63 6.45 $ 129,424 Options vested and expected to vest at June 28, 2019 7,272 46.92 6.37 128,586 Options exercisable at June 28, 2019 4,425 $ 40.42 5.47 106,992 (1) Aggregate intrinsic value is based on the closing price of our Class A common stock on June 28, 2019 of $64.60 and excludes the impact of options that were not in-the-money.
Summary Of Restricted Stock Units Issued To Officers, Directors And Employees Under 2005 Stock Incentive Plan	The following table summarizes information about RSUs issued under our 2005 Stock Plan: Shares Weighted-Average Grant Date Fair Value (in thousands) Non-vested at September 28, 2018 2,806 $ 51.62 Granted 1,288 65.05 Vested (1,006 ) 47.66 Forfeitures (186 ) 56.21 Non-vested at June 28, 2019 2,902 $ 58.66
Schedule Of Fair Value Of Stock-Based Awards Estimated Using Weighted-Average Assumptions	The weighted-average assumptions used in the determination of the fair value of our stock options were as follows: Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Expected life (in years) 4.90 5.06 4.90 5.06 Risk-free interest rate 2.4 % 2.9 % 2.7 % 2.2 % Expected stock price volatility 22.5 % 22.5 % 22.9 % 22.6 % Dividend yield 1.2 % 1.0 % 1.1 % 1.1 %
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following two tables separately present stock-based compensation expense both by award type and classification in our consolidated statements of operations (in thousands): Expense - By Award Type Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Compensation expense - by type Stock options $ 4,260 $ 4,500 $ 13,561 $ 16,554 Restricted stock units 13,566 11,581 42,836 33,993 Employee stock purchase plan 1,037 1,020 3,183 2,929 Total stock-based compensation 18,863 17,101 59,580 53,476 Benefit from income taxes (3,320 ) (3,488 ) (10,545 ) (11,041 ) Total stock-based compensation, net of tax $ 15,543 $ 13,613 $ 49,035 $ 42,435 Expense - By Income Statement Line Item Classification Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Compensation expense - by classification Cost of products and services $ 428 $ 400 $ 1,328 $ 1,167 Research and development 5,830 4,859 17,856 14,486 Sales and marketing 6,918 6,469 $ 22,352 $ 18,266 General and administrative 5,687 5,373 18,044 19,557 Total stock-based compensation expense 18,863 17,101 59,580 53,476 Benefit from income taxes (3,320 ) (3,488 ) (10,545 ) (11,041 ) Total stock-based compensation, net of tax $ 15,543 $ 13,613 $ 49,035 $ 42,435
Schedule of Tax Benefit from Exercise of Options	This benefit was as follows (in thousands): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, June 28, June 29, Tax benefit - shares issued under ESPP $ 104 $ 113 $ 305 $ 470
Schedule of Stock Repurchase Authorizations	The following table summarizes the initial amount of authorized repurchases as well as additional repurchases approved by our Board of Directors as of June 28, 2019 (in thousands): Authorization Period Authorization Amount Fiscal 2010: November 2009 $ 250,000 Fiscal 2010: July 2010 300,000 Fiscal 2011: July 2011 250,000 Fiscal 2012: February 2012 100,000 Fiscal 2015: October 2014 200,000 Fiscal 2017: January 2017 200,000 Fiscal 2018: July 2018 350,000 Total $ 1,650,000
Schedule of Stock Repurchase Activity	The following table provides information regarding share repurchase activity under the program during fiscal 2019 : Quarterly Repurchase Activity Shares Repurchased Cost in thousands (1) Average Price Paid Per Share (2) Q1 - Quarter ended December 28, 2018 1,642,107 $ 112,570 $ 68.54 Q2 - Quarter ended March 29, 2019 1,318,250 85,351 64.73 Q3 - Quarter ended June 28, 2019 1,405,065 88,653 63.08 Total 4,365,422 $ 286,574 (1) Cost of share repurchases includes the price paid per share and applicable commissions. (2) Average price paid per share excludes commission costs.
Dividends Declared	The following table summarizes dividends declared under the program in relation to fiscal 2019 : Fiscal Period Announcement Date Record Date Payment Date Cash Dividend Per Common Share Dividend Payment Fiscal 2019 Q1 - Quarter ended December 28, 2018 January 30, 2019 February 12, 2019 February 21, 2019 $ 0.19 $19.5 million Q2 - Quarter ended March 29, 2019 May 1, 2019 May 14, 2019 May 22, 2019 $ 0.19 $19.3 million Q3 - Quarter ended June 28, 2019 August 1, 2019 August 12, 2019 August 20, 2019 $ 0.19 $19.1 million (1) (1) The amount of the dividend payment is estimated based on the number of shares of our Class A and Class B common stock that we estimate will be outstanding as of the Record Date.

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Jun. 28, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following table summarizes the changes in the accumulated balances during the period, and includes information regarding the manner in which the reclassifications out of AOCI into earnings affect our consolidated statements of operations (in thousands): Fiscal Quarter Ended Fiscal Year-To-Date Ended Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Beginning Balance $ (80 ) $ — $ (14,603 ) $ (14,683 ) $ (2,948 ) $ — $ (12,884 ) $ (15,832 ) Other comprehensive income before reclassifications: Unrealized gains/(losses) 2,095 139 — 2,234 4,905 139 — 5,044 Foreign currency translation gains/(losses) (1) — — (1,865 ) (1,865 ) — — (3,584 ) (3,584 ) Income tax effect - benefit/(expense) (60 ) — — (60 ) 39 — — 39 Net of tax 2,035 139 (1,865 ) 309 4,944 139 (3,584 ) 1,499 Amounts reclassified from AOCI into earnings: Realized gains/(losses) (1) (147 ) (5 ) — (152 ) (213 ) (5 ) — (218 ) Income tax effect - benefit/(expense) (2) 30 — — 30 55 — — 55 Net of tax (117 ) (5 ) — (122 ) (158 ) (5 ) — (163 ) Net current-period other comprehensive income/(loss) 1,918 134 (1,865 ) 187 4,786 134 (3,584 ) 1,336 Ending Balance $ 1,838 $ 134 $ (16,468 ) $ (14,496 ) $ 1,838 $ 134 $ (16,468 ) $ (14,496 ) Fiscal Quarter Ended Fiscal Year-To-Date Ended Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Investment Securities Cash Flow Hedges Currency Translation Adjustments Total Beginning Balance $ (3,529 ) $ — $ (2,087 ) $ (5,616 ) $ (377 ) $ — $ (7,376 ) $ (7,753 ) Other comprehensive income before reclassifications: Unrealized gains/(losses) 490 — — 490 (2,599 ) — — (2,599 ) Foreign currency translation gains/(losses) (1) — — (9,275 ) (9,275 ) — — (2,845 ) (2,845 ) Income tax effect - benefit/(expense) (21 ) — 1,251 1,230 82 — 110 192 Net of tax 469 — (8,024 ) (7,555 ) (2,517 ) — (2,735 ) (5,252 ) Amounts reclassified from AOCI into earnings: Realized gains/(losses) (1) (162 ) — — (162 ) (369 ) — — (369 ) Income tax effect - benefit/(expense) (2) 32 — — 32 73 — — 73 Net of tax (130 ) — — (130 ) (296 ) — — (296 ) Net current-period other comprehensive income/(loss) 339 — (8,024 ) (7,685 ) (2,813 ) — (2,735 ) (5,548 ) Ending Balance $ (3,190 ) $ — $ (10,111 ) $ (13,301 ) $ (3,190 ) $ — $ (10,111 ) $ (13,301 ) (1) Realized gains or losses, if any, from the sale of our AFS investment securities or from foreign currency translation adjustments are included within other income/expense, net in our consolidated statements of operations. Realized gains or losses on cash flow hedges are included in operating expenses together with the hedged item. (2) The income tax benefit or expense is included within provision for income taxes in our consolidated statements of operations.

Per Share Data (Tables)

Per Share Data (Tables)	9 Months Ended
	Jun. 29, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of basic and diluted EPS attributable to Dolby Laboratories, Inc. (in thousands, except per share amounts): Fiscal Quarter Ended Fiscal Year-To-Date Ended June 28, June 29, 2018 (as adjusted) June 28, June 29, 2018 (as adjusted) Numerator: Net income attributable to Dolby Laboratories, Inc. $ 39,574 $ 3,116 $ 211,233 $ 15,030 Denominator: Weighted-average shares outstanding—basic 101,218 103,836 102,012 103,386 Potential common shares from options to purchase common stock 1,829 2,198 2,006 2,364 Potential common shares from restricted stock units 670 916 1,007 1,193 Weighted-average shares outstanding—diluted 103,717 106,950 105,025 106,943 Net income per share attributable to Dolby Laboratories, Inc.: Basic $ 0.39 $ 0.03 $ 2.07 $ 0.15 Diluted $ 0.38 $ 0.03 $ 2.01 $ 0.14 Antidilutive awards excluded from calculation: Stock options 2,610 1,292 2,277 950 Restricted stock units 37 44 1 16

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Jun. 28, 2019
Income Tax Disclosure [Abstract]
Schedule of Withholding Taxes

Restructuring (Tables)

Restructuring (Tables)	9 Months Ended
	Jun. 28, 2019
Restructuring Charges [Abstract]
Restructuring and Related Costs	Severance Leased facility exit costs Fixed assets write-off Other associated costs Total Balance at September 28, 2018 $ — $ — $ — $ 124 $ 124 Restructuring charges 2,854 12,247 15,216 (53 ) 30,264 Cash payments (528 ) (130 ) (658 ) Non-cash and other adjustments 2,039 (15,216 ) 59 (13,118 ) Balance at June 28, 2019 $ 2,326 $ 14,286 $ — $ — $ 16,612

Commitments And Contingencies (

Commitments And Contingencies (Tables)	9 Months Ended
	Jun. 28, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule Of Contractual Obligations And Commitments	The following table presents a summary of our contractual obligations and commitments as of June 28, 2019 (in thousands): Payments Due By Fiscal Period Remainder of Fiscal 2019 Fiscal Fiscal Fiscal Fiscal Thereafter Total Naming rights $ — $ 7,909 $ 8,008 $ 8,108 $ 8,209 $ 78,656 $ 110,890 Operating leases 5,237 13,202 8,838 6,784 5,847 15,897 55,805 Purchase obligations 22,240 25,260 2,819 380 — — 50,699 Donation commitments 3,531 2,341 141 141 141 1,200 7,495 Total $ 31,008 $ 48,712 $ 19,806 $ 15,413 $ 14,197 $ 95,753 $ 224,889

Basis Of Presentation (Details)

Basis Of Presentation (Details) - segment	3 Months Ended	9 Months Ended
	Jun. 28, 2019	Jun. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of weeks in fiscal year	13 years
Number of Operating Segments		1

Summary Of Significant Accoun_4

Summary Of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018	Sep. 28, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues	$ 302,159	$ 214,780	$ 942,793	$ 814,029
Gross margin	262,469	180,397	827,899	717,726
Provision for income taxes	(2,163)	9,067	(14,486)	(163,070)
Net income (loss) attributable to Dolby Laboratories, Inc.	$ 39,574	$ 3,116	$ 211,233	$ 15,030
Diluted (in usd per share)	$ 0.38	$ 0.03	$ 2.01	$ 0.14
Accounts receivable, net	$ 231,185		$ 231,185		$ 166,133
Contract assets	182,912		182,912		165,959
Prepaid expenses and other current assets	41,030		41,030		34,890
Deferred taxes	109,208		109,208		74,766
Other non-current assets	100,550		100,550		80,080
Accrued liabilities	243,738		243,738		243,128
Contract liabilities	19,435		19,435		17,468
Non-current contract liabilities	24,428		24,428		25,887
Other non-current liabilities	186,765		186,765		183,799
Retained earnings	2,328,918		2,328,918		2,313,539
Net income	$ 39,637	$ 3,259	211,570	$ 15,451
Deferred income taxes			(34,872)	15,163
Accounts receivable			(70,022)	1,975
Contract assets			(16,942)	12,897
Prepaid expenses and other assets			(13,719)	(13,718)
Accounts payable and other liabilities			(10,733)	(16,368)
Contract liabilities			491	(838)
Net cash provided by operating activities			$ 197,194	240,471
Previously Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues		317,447		906,599
Gross margin		282,982		810,299
Provision for income taxes		13,302		198,332
Net income (loss) attributable to Dolby Laboratories, Inc.		$ 83,145		$ 72,154
Diluted (in usd per share)		$ 0.78		$ 0.67
Accounts receivable, net					137,151
Contract assets					0
Prepaid expenses and other current assets					35,209
Deferred taxes					101,070
Other non-current assets					42,280
Accrued liabilities					223,594
Contract liabilities					23,931
Non-current contract liabilities					40,064
Other non-current liabilities					150,960
Retained earnings					2,139,154
Net income				$ 72,575
Deferred income taxes				47,145
Accounts receivable				(78,480)
Contract assets				0
Prepaid expenses and other assets				(13,719)
Accounts payable and other liabilities				(12,781)
Contract liabilities				(366)
Net cash provided by operating activities				240,471
Restatement Adjustment | Effect of Adopting ASC 606
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenues		$ (102,667)		(92,570)
Gross margin		(102,585)		(92,573)
Provision for income taxes		(22,369)		(35,262)
Net income (loss) attributable to Dolby Laboratories, Inc.		$ (80,029)		$ (57,124)
Diluted (in usd per share)		$ (0.75)		$ (0.53)
Accounts receivable, net					28,982
Contract assets					165,959
Prepaid expenses and other current assets					(319)
Deferred taxes					(26,304)
Other non-current assets					37,800
Accrued liabilities					19,534
Contract liabilities					(6,463)
Non-current contract liabilities					(14,177)
Other non-current liabilities					32,839
Retained earnings					$ 174,385
Net income				$ (57,124)
Deferred income taxes				(31,982)
Accounts receivable				80,455
Contract assets				12,897
Prepaid expenses and other assets				1
Accounts payable and other liabilities				(3,587)
Contract liabilities				(472)
Net cash provided by operating activities				$ 0

Revenue Recognition (Performanc

Revenue Recognition (Performance Obligation) (Details) $ in Millions	9 Months Ended
	Jun. 28, 2019USD ($)country
Revenue from Contract with Customer [Abstract]
Performance obligation, description of timing	one year or less
Remaining performance obligation | $	$ 41.9
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Countries technologies are licensed in | country	50
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	17.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	32.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Expected timing of satisfaction period	1 year
Remaining performance obligation, percent	51.00%

Revenue Recognition Narrative (

Revenue Recognition Narrative (Details) $ in Millions	3 Months Ended
	Jun. 28, 2019USD ($)
Revenue from Contract with Customer [Abstract]
Revenue adjustment	$ 7
Revenue recognized	$ 6.6

Revenue Recognition (Schedule o

Revenue Recognition (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 302,159	$ 214,780	$ 942,793	$ 814,029
Revenue from contract with customer, percent	100.00%	100.00%	100.00%	100.00%
United States
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 78,590	$ 63,691	$ 356,389	$ 268,505
Revenue from contract with customer, percent	26.00%	30.00%	38.00%	33.00%
International
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 223,569	$ 151,089
Revenue from contract with customer, percent	74.00%	70.00%	62.00%	67.00%
International
Revenue from External Customer [Line Items]
Revenue from contract with customer			$ 586,404	$ 545,524
Licensing
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 271,897	$ 183,771	$ 842,484	$ 726,078
Revenue from contract with customer, licensing percent	100.00%	100.00%	100.00%	100.00%
Revenue from contract with customer, percent	90.00%	86.00%	89.00%	89.00%
Products and services
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 30,262	$ 31,009	$ 100,309	$ 87,951
Revenue from contract with customer, percent	10.00%	14.00%	11.00%	11.00%
Broadcast
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 134,106	$ 83,760	$ 356,668	$ 283,027
Revenue from contract with customer, licensing percent	49.00%	46.00%	42.00%	39.00%
PC
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 24,579	$ 16,530	$ 88,929	$ 80,786
Revenue from contract with customer, licensing percent	9.00%	9.00%	11.00%	11.00%
Mobile
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 47,034	$ 19,596	$ 147,966	$ 146,473
Revenue from contract with customer, licensing percent	17.00%	11.00%	18.00%	20.00%
CE
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 28,662	$ 27,935	$ 117,188	$ 103,645
Revenue from contract with customer, licensing percent	11.00%	15.00%	14.00%	14.00%
Other
Revenue from External Customer [Line Items]
Revenue from contract with customer	$ 37,516	$ 35,950	$ 131,733	$ 112,147
Revenue from contract with customer, licensing percent	14.00%	19.00%	15.00%	16.00%

Revenue Recognition - Summary o

Revenue Recognition - Summary of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 28, 2019	Sep. 28, 2018
Revenue from Contract with Customer [Abstract]
Accounts Receivable, Net, Current	$ 231,185	$ 166,133
Contract assets	182,912	165,959
Other non-current assets	100,550	80,080
Contract liabilities	19,435	17,468
Non-current contract liabilities	24,428	25,887
Other non-current liabilities	186,765	$ 183,799
Change ($)
Accounts receivable, net	65,052
Contract assets	16,953
Other non-current assets	20,470
Contract liabilities - current	1,967
Contract liabilities - non-current	(1,459)
Other non-current liabilities	$ 2,966
Change (%)
Accounts receivable, net	39.00%
Contract assets	10.00%
Other non-current assets	26.00%
Contract liabilities - current	11.00%
Contract liabilities - non-current	(6.00%)
Other non-current liabilities	2.00%

Composition Of Certain Financ_3

Composition Of Certain Financial Statement Captions (Schedule Of Accounts Receivable) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]
Trade accounts receivable	$ 194,024	$ 108,929
Accounts receivable related to patent administration program	47,609	62,462
Accounts receivable, gross	241,633	171,391
Less: allowance for doubtful accounts	(10,448)	(5,258)
Accounts receivable, net	$ 231,185	$ 166,133

Composition Of Certain Financ_4

Composition Of Certain Financial Statement Captions (Schedule Of Inventories) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]
Raw materials	$ 9,338	$ 6,095
Work in process	3,607	4,044
Finished goods	25,963	16,067
Inventories	$ 38,908	$ 26,206

Composition Of Certain Financ_5

Composition Of Certain Financial Statement Captions (Narrative) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Line Items]
Raw materials	$ 9,338	$ 6,095
Other Noncurrent Assets [Member]
Composition Of Certain Financial Statement Captions [Line Items]
Raw materials	2,900	$ 2,600
Land and Building [Member] | Other Current Assets [Member]
Composition Of Certain Financial Statement Captions [Line Items]
Land and building held for sale	$ 2,200

Composition Of Certain Financ_6

Composition Of Certain Financial Statement Captions (Schedule Of Prepaid Expenses And Other Current Assets) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]
Prepaid assets	$ 20,348	$ 18,508
Other current assets	19,930	13,946
Income tax receivable	752	2,436
Prepaid expenses and other current assets	$ 41,030	$ 34,890

Composition Of Certain Financ_7

Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]
Accrued royalties	$ 2,973	$ 2,648
Amounts payable to patent administration program partners	52,024	69,061
Accrued compensation and benefits	73,014	84,491
Accrued professional fees	15,154	9,749
Capital expenditures incurred, but not yet paid	4,631	13,956
Other accrued liabilities	95,942	63,223
Total	$ 243,738	$ 243,128

Composition Of Certain Financ_8

Composition Of Certain Financial Statement Captions (Schedule Of Other Non-Current Liabilities) (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Composition Of Certain Financial Statement Captions [Abstract]
Supplemental retirement plan obligations	$ 3,284	$ 3,388
Non-current tax liabilities	135,839	129,253
Other liabilities	47,642	51,158
Other non-current liabilities	$ 186,765	$ 183,799

Investments & Fair Value Meas_3

Investments & Fair Value Measurements (Schedule Of Financial Assets and Liabilities Carried At Fair Value) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 28, 2019	Sep. 28, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		$ 918,064
Cash Equivalents, at Carrying Value	$ 716,558
Cash and cash equivalents	716,560	918,063
Debt Securities, Available-for-sale, Unrealized Loss	(1)	(1)
Debt Securities, Available-for-sale, Amortized Cost	392,626	380,795
Debt Securities, Available-for-sale	394,540	377,723
Investment Owned, Unrecognized Unrealized Depreciation	(233)	(3,170)
Cash Cash Equivalents And Investments Total	1,048,649	1,283,983
Financial assets carried at fair value	716,560	918,063
Restricted Cash and Cash Equivalents	7,485	7,187
Long-term investments	211,352	187,782
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	41,573	206,479
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(34)	(2,204)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	73,786	80,613
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(198)	(967)
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost	189,056	191,241
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	189,039	190,541
Available For Sale Securities Debt Maturities After One Through Two Years Amortized Cost	125,979	122,131
Available For Sale Securities Debt Maturities After One Through Two Years Fair Value	126,737	120,545
Available For Sale Securities Debt Maturities After Two Through Three Years Amortized Cost	77,591	67,423
Available For Sale Securities Debt Maturities After Two Through Three Years Fair Value	78,764	66,637
Investment Owned, at Cost	1,046,736	1,286,810
Investment Owned, Unrecognized Unrealized Appreciation	2,146	343
Available-for-sale Securities, Gross Unrealized Gain	3
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	683,867	911,456
Financial assets carried at fair value	717,849	935,306
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	32,693	6,607
Financial assets carried at fair value	328,956	348,322
Cash [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	652,269	905,660
Cash Equivalents, at Carrying Value	652,269
Cash [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	652,269	905,660
Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	6,264
Cash Equivalents, at Carrying Value	6,265
Debt Securities, Available-for-sale, Unrealized Loss	(1)
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	15,084	3,301
Cash Equivalents, at Carrying Value	15,084
Money Market Funds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	15,084	3,301
Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		544
Cash Equivalents, at Carrying Value	1,000
Cash and cash equivalents		545
Debt Securities, Available-for-sale, Unrealized Loss	0	(1)
Municipal Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		0
Money Market Funds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		3,301
Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss		0
Debt Securities, Available-for-sale, Unrealized Gain		14
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,300	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		12,889
U.S. Agency Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis		9,791
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	796	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(3)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	7,074	21,486
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(22)	(302)
U.S. Agency Securities [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure		0
U.S. Agency Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure		9,625
US Government Agencies Short-term Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	(6)	(135)
Debt Securities, Available-for-sale	6,276	11,862
Debt Securities, Available-for-sale, Unrealized Gain	10	0
US Government Agencies Short-term Debt Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	6,276	11,862
Government Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		2,495
Debt Securities, Available-for-sale, Unrealized Loss		(15)
Debt Securities, Available-for-sale, Amortized Cost	16,513	7,970
Debt Securities, Available-for-sale	16,514
Debt Securities, Available-for-sale, Unrealized Gain		0
Available-for-sale Securities, Amortized Cost Basis		15,966
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	16,649	16,633
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1)	(332)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	8,647	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(36)	0
Available-for-sale Securities, Gross Unrealized Gain	1
Available-for-sale Securities, Gross Unrealized Loss	0
Government Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	16,514	2,495
Investments, Noncurrent, Fair Value Disclosure		15,649
Government Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0
Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		5,058
Debt Securities, Available-for-sale, Unrealized Loss		0
Debt Securities, Available-for-sale, Amortized Cost		4,276
Debt Securities, Available-for-sale, Unrealized Gain		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Investment Owned, at Cost	0	5,737
Investment Owned, Unrecognized Unrealized Appreciation	0	1
Commercial Paper [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		5,058
Investments, Fair Value Disclosure		4,276
Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		1,005
Debt Securities, Available-for-sale, Unrealized Loss		(494)
Debt Securities, Available-for-sale, Amortized Cost		111,245
Debt Securities, Available-for-sale, Unrealized Gain		50
Available-for-sale Securities, Amortized Cost Basis		146,561
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	20,145	143,051
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(30)	(1,680)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	53,766	52,162
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(137)	(624)
Corporate Debt Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	6,264	1,005
Investments, Fair Value Disclosure		110,801
Investments, Noncurrent, Fair Value Disclosure		144,784
Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	1,000
Debt Securities, Available-for-sale, Unrealized Loss		(120)
Debt Securities, Available-for-sale, Amortized Cost		30,475
Debt Securities, Available-for-sale, Unrealized Gain		0
Available-for-sale Securities, Amortized Cost Basis		17,235
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(191)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	4,299	6,965
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3)	(41)
Investment Owned, at Cost	1,683	41,058
Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	1,000	544
Investments, Fair Value Disclosure		30,355
Investments, Noncurrent, Fair Value Disclosure		17,123
Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Gain		64
Other Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cost Method Investment, Fair Value Measurement Adjustment		200
Available-for-sale Securities, Amortized Cost Basis		355
Investments, Noncurrent, Fair Value Disclosure	1,800	400
Other Long-term Investments [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure		246
Investments Held In Supplemental Retirement Plan [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial assets carried at fair value	3,382	3,486
Financial liabilities carried at fair value	3,382	3,486
Cash Equivalents [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0
Debt Securities, Available-for-sale, Amortized Cost	12,376
Debt Securities, Available-for-sale	12,376
Debt Securities, Available-for-sale, Unrealized Gain	0
Cash Equivalents [Member] | Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	12,376
Cash Equivalents [Member] | Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0
Debt Securities, Available-for-sale, Amortized Cost	13,051
Debt Securities, Available-for-sale	13,053
Debt Securities, Available-for-sale, Unrealized Gain	2
Cash Equivalents [Member] | Commercial Paper [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	13,053
Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss		(764)
Debt Securities, Available-for-sale, Amortized Cost		178,838
Debt Securities, Available-for-sale		178,138
Short-term Investments [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	11,963	7,955
Short-term Investments [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	108,774	170,183
Short-term Investments [Member] | Certificates of Deposit [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0
Debt Securities, Available-for-sale, Amortized Cost	1,486	12,875
Debt Securities, Available-for-sale	1,487
Debt Securities, Available-for-sale, Unrealized Gain	1
Available-for-sale Securities		12,889
Short-term Investments [Member] | Certificates of Deposit [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	1,487
Short-term Investments [Member] | U.S. Agency Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		11,997
Short-term Investments [Member] | US Government Agencies Short-term Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	6,272
Short-term Investments [Member] | Government Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0
Debt Securities, Available-for-sale, Amortized Cost	11,952
Debt Securities, Available-for-sale	11,963	7,955
Debt Securities, Available-for-sale, Unrealized Gain	11
Short-term Investments [Member] | Government Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	11,963	7,955
Short-term Investments [Member] | Commercial Paper [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0
Debt Securities, Available-for-sale, Amortized Cost	6,472
Debt Securities, Available-for-sale	6,485	4,276
Debt Securities, Available-for-sale, Unrealized Gain	13
Short-term Investments [Member] | Commercial Paper [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	6,485
Short-term Investments [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure		1,005
Debt Securities, Available-for-sale, Unrealized Loss	(112)
Debt Securities, Available-for-sale, Amortized Cost	82,230
Debt Securities, Available-for-sale	82,169	110,801
Debt Securities, Available-for-sale, Unrealized Gain	51
Short-term Investments [Member] | Corporate Debt Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	82,169
Short-term Investments [Member] | Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	(2)
Debt Securities, Available-for-sale, Amortized Cost	12,345
Debt Securities, Available-for-sale	12,357	30,355
Debt Securities, Available-for-sale, Unrealized Gain	14
Short-term Investments [Member] | Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	12,357
Short-term Investments [Member] | Short-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	(120)
Debt Securities, Available-for-sale, Amortized Cost	120,757
Debt Securities, Available-for-sale	120,737
Debt Securities, Available-for-sale, Unrealized Gain	100
Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis		189,908
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		279
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax		(2,405)
Available-for-sale Securities		187,782
Long-term Investments [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	22,019	15,895
Long-term Investments [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	187,489	171,532
Long-term Investments [Member] | Asset-backed Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	7,799
Available-for-sale Securities	7,865
Available-for-sale Securities, Gross Unrealized Gain	66
Available-for-sale Securities, Gross Unrealized Loss	0
Long-term Investments [Member] | Asset-backed Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	7,865
Long-term Investments [Member] | U.S. Agency Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	11,895
Available-for-sale Securities	12,010	9,625
Available-for-sale Securities, Gross Unrealized Gain	134	0
Available-for-sale Securities, Gross Unrealized Loss	(19)	(166)
Long-term Investments [Member] | U.S. Agency Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	12,010
Long-term Investments [Member] | Government Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	21,871
Available-for-sale Securities	22,012	15,649
Available-for-sale Securities, Gross Unrealized Gain	177	0
Available-for-sale Securities, Gross Unrealized Loss	(36)	(317)
Long-term Investments [Member] | Government Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	22,012
Long-term Investments [Member] | Corporate Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	154,196
Available-for-sale Securities	155,704	144,784
Available-for-sale Securities, Gross Unrealized Gain	1,563	33
Available-for-sale Securities, Gross Unrealized Loss	(55)	(1,810)
Long-term Investments [Member] | Corporate Debt Securities [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	155,704
Long-term Investments [Member] | Municipal Bonds [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	11,809
Available-for-sale Securities	11,910	17,123
Available-for-sale Securities, Gross Unrealized Gain	103	0
Available-for-sale Securities, Gross Unrealized Loss	(2)	(112)
Long-term Investments [Member] | Municipal Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	11,910
Long-term Investments [Member] | Other Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	1,851
Available-for-sale Securities	1,851	601
Available-for-sale Securities, Gross Unrealized Gain	0	246
Available-for-sale Securities, Gross Unrealized Loss	0	$ 0
Long-term Investments [Member] | Other Long-term Investments [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Noncurrent, Fair Value Disclosure	7
Long-term Investments [Member] | Long-term Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available-for-sale Securities, Amortized Cost Basis	209,421
Available-for-sale Securities	211,352
Available-for-sale Securities, Gross Unrealized Gain	2,043
Available-for-sale Securities, Gross Unrealized Loss	$ (112)

Property, Plant and Equipment_2

Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	$ 927,455	$ 876,463
Less: accumulated depreciation	(402,814)	(362,281)
Property, Plant And Equipment, Net	524,641	514,182
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	41,950	43,342
Building [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	282,857	283,474
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	67,748	66,866
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	117,058	111,603
Computer Systems and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	217,087	194,079
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	30,807	30,556
Equipment Leased to Other Party [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	156,047	139,201
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant And Equipment, Gross	$ 13,901	$ 7,342

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets Goodwill Rollforward (Details) $ in Thousands	9 Months Ended
	Jun. 28, 2019USD ($)
Goodwill [Roll Forward]
Balance at September 28, 2018	$ 327,982
Acquired goodwill	9,173
Translation adjustments	(1,219)
Balance at September 28, 2018	$ 335,936

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets Finite-Lived Intangible Assets (Details) - USD ($)	3 Months Ended						9 Months Ended
	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 29, 2017	Jun. 28, 2019	Jun. 29, 2018	Sep. 28, 2018
Finite-Lived Intangible Assets [Line Items]
Cost	$ 426,606,000						$ 426,606,000		$ 400,166,000
Accumulated Amortization	(237,302,000)						(237,302,000)		(216,147,000)
Total	189,304,000						189,304,000		184,019,000
Purchases of intangible assets	$ 10,200,000	$ 5,000,000	$ 12,100,000	$ 700,000	$ 2,800,000	$ 12,000,000	$ 27,300,000	$ 15,500,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years 4 months 24 days	4 years	11 years 7 months 6 days	5 years	5 years 3 months 18 days	14 years 1 month 6 days	7 years 10 months 24 days	12 years 1 month 6 days
Amortization of Intangible Assets	$ 7,600,000			$ 6,700,000			$ 21,600,000	$ 19,800,000
Acquired Patents And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	338,920,000						338,920,000		319,082,000
Accumulated Amortization	(170,722,000)						(170,722,000)		(152,775,000)
Total	168,198,000						168,198,000		166,307,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	63,223,000						63,223,000		58,342,000
Accumulated Amortization	(43,282,000)						(43,282,000)		(41,012,000)
Total	19,941,000						19,941,000		17,330,000
Other Intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	24,463,000						24,463,000		22,742,000
Accumulated Amortization	(23,298,000)						(23,298,000)		(22,360,000)
Total	$ 1,165,000						$ 1,165,000		$ 382,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets Future Amortization Expense (Details) - USD ($) $ in Thousands	Jun. 28, 2019	Sep. 28, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Remainder of 2019	$ 8,204
2018	31,568
2019	30,974
2020	28,280
2021	24,325
Thereafter	65,953
Total	$ 189,304	$ 184,019

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets Intangible Assets, Additions (Details)	3 Months Ended						9 Months Ended
	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Dec. 29, 2017	Jun. 28, 2019	Jun. 29, 2018
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years 4 months 24 days	4 years	11 years 7 months 6 days	5 years	5 years 3 months 18 days	14 years 1 month 6 days	7 years 10 months 24 days	12 years 1 month 6 days

Stockholders' Equity And Stoc_3

Stockholders' Equity And Stock-Based Compensation (Narrative) (Details)

Aug. 01, 2019$ / shares

May 01, 2019$ / shares

Jan. 30, 2019$ / shares

Dec. 15, 2018shares

Dec. 15, 2017shares

Dec. 15, 2016shares

Dec. 15, 2015shares

Jun. 28, 2019USD ($)vote$ / sharesshares

Jun. 29, 2018$ / shares

Jun. 28, 2019USD ($)vote$ / sharesshares

Jun. 29, 2018$ / shares

Oct. 31, 2010

Mar. 28, 2014

Sep. 28, 2018shares

Jul. 25, 2018USD ($)

Jan. 25, 2017USD ($)

Oct. 31, 2014USD ($)

Feb. 29, 2012USD ($)

Jul. 31, 2011USD ($)

Jul. 31, 2010USD ($)

Nov. 30, 2009USD ($)

Stockholders' Equity And Stock-Based Compensation [Line Items]

Options outstanding to purchase

7,365,000

Year end stock price | $ / shares

$ 64.60

Percentage of vesting per year

50.00%

Common stock, dividends declared (in dollars per share) | $ / shares

$ 0.19

$ 0.19

$ 0.19

$ 0.16

$ 0.57

$ 0.48

Remaining authorization to purchase additional shares | $

$ 65,000,000

$ 65,000,000

Authorization Amount | $

$ 250,000,000

Subsequent Event [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Common stock, dividends declared (in dollars per share) | $ / shares

$ 0.19

Employee Stock Option [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Stock options expected to vest | $

$ 29,600,000

$ 29,600,000

Employee stock options expected to be recognized over a weighted-average period

2 years 3 months 18 days

Performance-Based Stock Options [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

7 years

Compensation requisite measurement period

3 years

Performance-Based Stock Options [Member] | Executive Officer [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Shares exercisable (in shares)

1,224,987

1,224,987

Percentage Of Target Award

125.00%

Options outstanding to purchase

758,299

758,299

Performance-Based Stock Options [Member] | Executive Officer [Member] | Awarded Fiscal 2018 [Member] [Domain]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Shares exercisable (in shares)

330,000

Percentage Of Target Award

125.00%

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures

264,000

Performance-Based Stock Options [Member] | Executive Officer [Member] | Awarded Fiscal 2016 [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Percentage Of Target Award

125.00%

Options vested and exercisable

334,623

Performance-Based Stock Options [Member] | Executive Officer [Member] | Awarded Fiscal 2017 [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Shares exercisable (in shares)

345,248

Percentage Of Target Award

125.00%

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures

276,199

Performance-Based Stock Options [Member] | Executive Officer [Member] | Awarded Fiscal 2019 [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Shares exercisable (in shares)

301,375

Percentage Of Target Award

125.00%

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures

241,100

Restricted Stock Units (RSUs) [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Stock options expected to vest | $

$ 121,800,000

$ 121,800,000

Employee stock options expected to be recognized over a weighted-average period

2 years 6 months

Restricted Stock Units (RSUs) [Member] | Employees and Officers [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Restricted Stock Units (RSUs) [Member] | Awards Granted Prior to November 2010 [Member] | Directors [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

3 years

1 year

Restricted Stock Units (RSUs) [Member] | Awards Granted After November 2010 [Member] | Directors [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

2 years

Awards Granted Under 2005 Stock Plan Prior To February 2011 [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Terms for issuance of stock

2

Awards Granted Under 2005 Stock Plan From February 2011 [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Terms for issuance of stock

1.6

Employee Stock Purchase Plan [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Percentage of compensation withheld by employees to purchase common stock

10.00%

Common stock purchase price determined over percentage of closing price

15.00%

Additional Stock Approved [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Authorization Amount | $

$ 350,000,000

$ 200,000,000

$ 200,000,000

$ 100,000,000

$ 250,000,000

$ 300,000,000

Class A Common Stock [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Common stock, shares authorized (shares)

500,000,000

500,000,000

500,000,000

Common stock, shares issued (shares)

63,716,563

63,716,563

63,978,752

Common stock, number of votes per share | vote

1

1

Common stock, shares outstanding (shares)

63,716,563

63,716,563

63,978,752

Class A Common Stock [Member] | 2005 Stock Plan. [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Shares authorized under plan

46,000,000

46,000,000

Options outstanding to purchase

7,627,000

7,627,000

Weighted average remaining contractual life

6 years 5 months 12 days

Options vested and exercisable

4,425,000

4,425,000

Class A Common Stock [Member] | Employee Stock Purchase Plan [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Maximum value of common stock available for eligible employees | $

$ 25,000

Maximum number of common stock available for eligible employees

1,000

Purchase period

6 months

Look back commencement period

1 year

Class B Common Stock [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Common stock, shares authorized (shares)

500,000,000

500,000,000

500,000,000

Common stock, shares issued (shares)

36,952,512

36,952,512

39,261,035

Common stock, number of votes per share | vote

10

10

Common stock, shares outstanding (shares)

36,952,512

36,952,512

39,261,035

Options Granted Prior To June 2008 [Member] | Employee Stock Option [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Options expiration period

10 years

Options Granted From June Two Thousand Eight Member | Employee Stock Option [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

4 years

Options expiration period

10 years

Options Granted From June Two Thousand Eight Member | Employee Stock Option [Member] | One year anniversary date

Stockholders' Equity And Stock-Based Compensation [Line Items]

Percentage of stock option becoming exercisable subjected to date of grant

25.00%

Options Granted From June Two Thousand Eight Member | Employee Stock Option [Member] | Over 36 equally installment periods following one year anniversary date

Stockholders' Equity And Stock-Based Compensation [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

36 months

Minimum [Member] | Performance-Based Stock Options [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Percentage Of Target Award

0.00%

Maximum [Member] | Performance-Based Stock Options [Member]

Stockholders' Equity And Stock-Based Compensation [Line Items]

Percentage Of Target Award

125.00%

Stockholders' Equity And Stoc_4

Stockholders' Equity And Stock-Based Compensation (Summary Of Stock Options Issued To Officers, Directors, And Employees Under 2000 Stock Incentive Plan And 2005 Stock Plan) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Jun. 28, 2019USD ($)$ / sharesshares
Shares
Shares, Options outstanding at beginning of period | shares	7,365
Shares, Grants | shares	1,245
Shares, Exercises | shares	(842)
Shares, Forfeitures and cancellations | shares	(141)
Shares, Options vested and expected to vest | shares	7,272
Weighted-Average Exercise Price
Weighted Average Exercise Price, Options outstanding at beginning of period	$ 43.51
Weighted Average Exercise Price, Grants (in usd per share)	64.60
Weighted Average Exercise Price, Exercises (in usd per share)	35.92
Weighted Average Exercise Price, Forfeitures and cancellations (in usd per share)	52.35
Weighted Average Exercise Price, Options outstanding at end of period	47.63
Weighted Average Exercise Price, Options vested and expected to vest (in usd per share)	46.92
Weighted Average Exercise Price, Options exercisable (in usd per share)	$ 40.42
Weighted Average Remaining Contractual Life, Options vested and expected to vest at end of period	6 years 4 months 13 days
Weighted Average Remaining Contractual Life, Options exercisable	5 years 5 months 19 days
Aggregate Intrinsic Value, Options outstanding | $	$ 129,424
Aggregate Intrinsic Value, Options vested and expected to vest | $	128,586
Aggregate Intrinsic Value, Options exercisable | $	$ 106,992
Employee Stock Option [Member] | Options Granted From June Two Thousand Eight Member
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years

Stockholders' Equity And Stoc_5

Stockholders' Equity And Stock-Based Compensation (Summary Of Restricted Stock Units Issued To Officers, Directors, And Employees Under 2005 Stock Incentive Plan) (Details) shares in Thousands	9 Months Ended
	Jun. 28, 2019$ / sharesshares
Shares
Shares, Non-vested at beginning of period | shares	2,806
Shares, Granted | shares	1,288
Shares, Vested | shares	(1,006)
Shares, Forfeitures | shares	(186)
Shares, Non-vested at end of period | shares	2,902
Weighted-Average Grant Date Fair Value
Weighted Average Fair Value, Non-vested at beginning of period | $ / shares	$ 51.62
Weighted Average Fair Value, Granted | $ / shares	65.05
Weighted Average Fair Value, Vested | $ / shares	47.66
Weighted Average Fair Value, Forfeitures | $ / shares	56.21
Weighted Average Fair Value, Non-vested at end of period | $ / shares	$ 58.66

Stockholders' Equity And Stoc_6

Stockholders' Equity And Stock-Based Compensation (Schedule Of Fair Value Of Stock-Based Awards Estimated Using Weighted-Average Assumptions) (Details)	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Stockholders' Equity And Stock-Based Compensation [Abstract]
Expected life (in years)	4 years 10 months 24 days	5 years 21 days	4 years 10 months 24 days	5 years 21 days
Risk-free interest rate	2.40%	2.90%	2.70%	2.20%
Expected stock price volatility	22.50%	22.50%	22.90%	22.60%
Dividend yield	1.20%	1.00%	1.10%	1.10%

Stockholders' Equity And Stoc_7

Stockholders' Equity And Stock-Based Compensation (Schedule Of Stock-Based Compensation Expense By Plan) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	$ 18,863	$ 17,101	$ 59,580	$ 53,476
Share-based Compensation			59,580	53,476
Benefit from income taxes	(3,320)	(3,488)	(10,545)	(11,041)
Total stock-based compensation, net of tax	15,543	13,613	49,035	42,435
Stock Option [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	4,260	4,500
Share-based Compensation			13,561	16,554
Restricted Stock Units (RSUs) [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	13,566	11,581
Share-based Compensation			42,836	33,993
Employee Stock Purchase Plan [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	1,037	1,020
Share-based Compensation			3,183	2,929
Cost of Sales [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	428	400	1,328	1,167
Research and Development Expense [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	5,830	4,859	17,856	14,486
Selling and Marketing Expense [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	6,918	6,469	22,352	18,266
General and Administrative Expense [Member]
Stockholders' Equity And Stock-Based Compensation [Line Items]
Stock-based compensation expense	$ 5,687	$ 5,373	$ 18,044	$ 19,557

Stockholders' Equity And Stoc_8

Stockholders' Equity And Stock-Based Compensation (Schedule of Stock-Based Compensation By Classification) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 18,863	$ 17,101	$ 59,580	$ 53,476
Benefit from income taxes	(3,320)	(3,488)	(10,545)	(11,041)
Total stock-based compensation, net of tax	15,543	13,613	49,035	42,435
Cost of products [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	428	400	1,328	1,167
Research and development [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	5,830	4,859	17,856	14,486
Sales and marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	6,918	6,469	22,352	18,266
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 5,687	$ 5,373	$ 18,044	$ 19,557

Stockholders' Equity And Stoc_9

Stockholders' Equity And Stock-Based Compensation (Tax Benefit from Exercise of Options) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options	$ 104	$ 113	$ 305	$ 470

Stockholders' Equity And Sto_10

Stockholders' Equity And Stock-Based Compensation (Stock Repurchase Authorizations) (Details) - USD ($) $ in Thousands	Jul. 25, 2018	Jan. 25, 2017	Oct. 31, 2014	Feb. 29, 2012	Jul. 31, 2011	Jul. 31, 2010	Nov. 30, 2009
Equity, Class of Treasury Stock [Line Items]
Authorization Amount							$ 250,000
Additional Stock Approved [Member]
Equity, Class of Treasury Stock [Line Items]
Authorization Amount	$ 350,000	$ 200,000	$ 200,000	$ 100,000	$ 250,000	$ 300,000

Stockholders' Equity And Sto_11

Stockholders' Equity And Stock-Based Compensation (Stock Repurchase) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 28, 2019	Jun. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased (in shares)	1,000			4,365,422
Payments for Repurchase of Common Stock	$ 88,653			$ 286,512	$ 90,480
Repurchase of common stock		$ 85,351	$ 112,570	$ 286,574
Average Price Paid per Share (in dollars per share)	$ 63.08			$ 63.08
Stock Repurchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares repurchased (in shares)	1,405,065	1,318,250	1,642,107
Average Price Paid per Share (in dollars per share)		$ 64.73	$ 68.54

Stockholders' Equity and Sto_12

Stockholders' Equity and Stock-Based Compensation - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 20, 2019	Aug. 01, 2019	May 22, 2019	May 01, 2019	Jan. 30, 2019	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Dividends Payable [Line Items]
Common stock, dividends declared (in dollars per share)				$ 0.19	$ 0.19	$ 0.19	$ 0.16	$ 0.57	$ 0.48
Dividend Payment			$ 19.3		$ 19.5
Subsequent Event [Member]
Dividends Payable [Line Items]
Common stock, dividends declared (in dollars per share)		$ 0.19
Dividend Payment	$ 19.1

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	$ (14,683)	$ (5,616)	$ (15,832)	$ (7,753)
Unrealized Gains (Losses)	2,234		5,044
Income Tax Effect - Benefit/(Expense)	(60)	1,230	(39)	192
Net Of Tax	47	(7,958)	1,202	(5,628)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	309	(7,555)	1,499	(5,252)
Realized (Gains) - Investment Securities	(152)	(162)	(218)	(369)
Income Tax Effect - (Benefit)/Expense	30	32	55	73
Net Of Tax	(122)	(130)	(163)	(296)
Net current-period other comprehensive income/(loss)	187	(7,685)	1,336	(5,548)
Balance, End Of Period	(14,496)	(13,301)	(14,496)	(13,301)
Unrealized Gains/Losses On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	(80)	(3,529)	(2,948)	(377)
Unrealized Gains (Losses)	2,095	490	4,905	(2,599)
Income Tax Effect - Benefit/(Expense)	60	(21)	(39)	82
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	2,035	469	4,944	(2,517)
Realized (Gains) - Investment Securities	(147)	(162)	(213)	(369)
Income Tax Effect - (Benefit)/Expense	30	32	55	73
Net Of Tax	(117)	(130)	(158)	(296)
Net current-period other comprehensive income/(loss)	1,918	339	4,786	(2,813)
Balance, End Of Period	1,838	(3,190)	1,838	(3,190)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	0		0
Unrealized Gains (Losses)	139		139
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	139		139
Realized (Gains) - Investment Securities	(5)		(5)
Net Of Tax	(5)		(5)
Net current-period other comprehensive income/(loss)	134		134
Balance, End Of Period	134		134
Foreign Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance, Beginning Of Period	(14,603)	(2,087)	(12,884)	(7,376)
Unrealized Gains (Losses)	(1,865)	(9,275)	(3,584)	(2,845)
Income Tax Effect - Benefit/(Expense)	0	1,251	0	110
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	(1,865)	(8,024)	(3,584)	(2,735)
Net Of Tax			(3,584)	(2,735)
Net current-period other comprehensive income/(loss)	(1,865)	(8,024)
Balance, End Of Period	$ (16,468)	$ (10,111)	$ (16,468)	$ (10,111)

Per Share Data (Details)

Per Share Data (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Net income attributable to Dolby Laboratories, Inc.	$ 39,574	$ 3,116	$ 211,233	$ 15,030
Weighted average shares outstanding-basic (in shares)	101,218	103,836	102,012	103,386
Potential common shares from options to purchase common stock (in shares)	1,829	2,198	2,006	2,364
Potential common shares from restricted stock units (in shares)	670	916	1,007	1,193
Weighted average shares outstanding-diluted (in shares)	103,717	106,950	105,025	106,943
Net income per share attributable to Dolby Laboratories, Inc. - Basic (in usd per share)	$ 0.39	$ 0.03	$ 2.07	$ 0.15
Net income per share attributable to Dolby Laboratories, Inc. - Diluted (in usd per share)	$ 0.38	$ 0.03	$ 2.01	$ 0.14
Employee Stock Option [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Anti-dilutive securities, excluded from calculations (in shares)	2,610	1,292	2,277	950
Restricted Stock Units (RSUs) [Member]
Schedule Of Earnings Per Share Basic And Diluted [Line Items]
Anti-dilutive securities, excluded from calculations (in shares)	37	44	1	16

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Jun. 28, 2019	Mar. 29, 2019	Dec. 28, 2018	Jun. 29, 2018	Mar. 30, 2018	Mar. 29, 2019	Jun. 28, 2019	Jun. 29, 2018	Sep. 28, 2018
Income Tax Contingency [Line Items]
Federal tax rate	21.00%					35.00%
Provision for income taxes		$ 2,163			$ (9,067)			$ 14,486	$ 163,070
Tax Cuts and Jobs Act, incomplete accounting, transition tax for accumulated foreign earnings, provisional income tax expense		2,300	$ (19,000)	$ 36,000			$ (19,000)	2,300		$ (121,400)
Tax Cuts and Jobs Act, transition tax for accumulated foreign earnings, income tax expense1		102,100
Unrecognized tax benefits, gross		107,500						107,500		102,000
Unrecognized tax benefits if recognized, would affect our effective tax rate		$ 72,700						72,700		96,900
Unrecognized tax benefits, period increase (decrease)								$ 9,400
Effective tax rate (as a percent)		5.20%			156.10%			6.40%	91.30%
Impact Of Tax Cuts And Jobs Act [Member]
Income Tax Contingency [Line Items]
Provision for income taxes										121,400
Impact Of Tax Cuts And Jobs Act, Repatriation Transition Tax [Member]
Income Tax Contingency [Line Items]
Increase (Decrease) in Deferred Income Taxes				36,000
Deferred tax assets, gross										$ 33,600
Effect of Adopting ASC 606
Income Tax Contingency [Line Items]
Increase (Decrease) in Deferred Income Taxes				$ (26,300)

Restructuring (Details)

Restructuring (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2019	Jun. 29, 2018	Jun. 28, 2019	Jun. 29, 2018
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			$ 124
Restructuring charges	$ (30,232)	$ 82	(30,264)	$ 446
Cash payments			(658)
Non-cash charges			13,118
Restructuring reserve, ending balance	16,612		16,612
Severance
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Restructuring charges			(2,854)
Cash payments			(528)
Non-cash charges
Restructuring reserve, ending balance	2,326		2,326
Leased facility exit costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Restructuring charges			(12,247)
Cash payments
Non-cash charges			(2,039)
Restructuring reserve, ending balance	14,286		14,286
Fixed assets write-off
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			0
Restructuring charges			(15,216)
Cash payments
Non-cash charges			15,216
Restructuring reserve, ending balance	0		0
Other associated costs
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning balance			124
Restructuring charges			53
Cash payments			(130)
Non-cash charges			(59)
Restructuring reserve, ending balance	$ 0		$ 0

Commitments And Contingencies_2

Commitments And Contingencies (Schedule Of Contractual Obligations And Commitments) (Details) $ in Thousands	Jun. 28, 2019USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remainder of Fiscal 2018	$ 0
Naming rights, Fiscal 2019	7,909
Naming rights, Fiscal 2020	8,008
Naming rights, Fiscal 2021	8,108
Naming rights, Fiscal 2022	8,209
Naming rights, Thereafter	78,656
Naming rights, Total	110,890
Donation commitments, Remainder of Fiscal 2018	3,531
Donation commitments, Fiscal 2019	2,341
Donation commitments, Fiscal 2020	141
Donation commitments, Fiscal 2021	141
Donation commitments, Fiscal 2022	141
Donation commitments, Thereafter	1,200
Donation commitments, Total	55,805
Operating leases, Remainder of 2018	5,237
Operating leases, Fiscal 2019	13,202
Operating leases, Fiscal 2020	8,838
Operating leases, Fiscal 2021	6,784
Operating leases, Fiscal 2022	5,847
Operating leases, Thereafter	15,897
Operating leases, Total	50,699
Purchase obligation, Remainder of 2018	22,240
Purchase obligation, Fiscal 2019	25,260
Purchase obligation, Fiscal 2020	2,819
Purchase Obligation, Fiscal 2021	380
Purchase obligation, Fiscal 2022	0
Purchase obligation, Thereafter	0
Purchase obligation, Total	7,495
Total, due in Remainder of Fiscal 2018	31,008
Total, due in Fiscal 2019	48,712
Total, due in Fiscal 2020	19,806
Total, due in Fiscal 2021	15,413
Total, due in Fiscal 2022	14,197
Total, due Thereafter	95,753
Total due	$ 224,889

Commitments And Contingencies_3

Commitments And Contingencies (Narrative) (Details)	9 Months Ended
	Jun. 28, 2019
Naming Rights [Member]
Other Commitments [Line Items]
Term of agreement	20 years
Donation Commitments [Member]
Other Commitments [Line Items]
Term of agreement	15 years

Subsequent Events (Details)

Subsequent Events (Details) $ in Thousands	Nov. 30, 2009USD ($)
Subsequent Event [Line Items]
Stock repurchase program, authorized amount	$ 250,000