Fair Value Measurements (Tables)

6 Months Ended

Mar. 27, 2016

Notes to Financial Statements [Abstract]

Fair value hierarchy for assets and liabilities measured at fair value on a recurring basis

The following table presents the Company’s fair value hierarchy for assets and liabilities measured at fair value on a recurring basis at March 27, 2016 (in millions):

	Level 1		Level 2		Level 3		Total
Assets
Cash equivalents	$	2,860	$	1,884	$	—	$	4,744
Marketable securities
U.S. Treasury securities and government-related securities	103		1,019		—		1,122
Corporate bonds and notes	—		16,696		—		16,696
Mortgage- and asset-backed and auction rate securities	—		1,901		65		1,966
Equity and preferred securities and equity funds	1,088		403		—		1,491
Debt funds	—		2,934		—		2,934
Total marketable securities	1,191		22,953		65		24,209
Derivative instruments	—		60		—		60
Other investments	289		—		—		289
Total assets measured at fair value	$	4,340	$	24,897	$	65	$	29,302
Liabilities
Derivative instruments	$	—	$	7	$	—	$	7
Other liabilities	288		—		—		288
Total liabilities measured at fair value	$	288	$	7	$	—	$	295

Activity for marketable securities classified within Level 3 of the valuation hierarchy

The following table includes the activity for mortgage- and asset-backed and auction rate securities classified within Level 3 of the valuation hierarchy (in millions):

	Six Months Ended
	March 27, 2016			March 29, 2015
Beginning balance of Level 3	$	224		$	269
Total realized and unrealized gains or losses:
Included in investment income, net	(3		)	3
Included in other comprehensive income (loss)	(2		)	(4		)
Purchases	2			50
Sales	(101		)	(41		)
Settlements	(40		)	(49		)
Transfers out of Level 3	(15		)	—
Ending balance of Level 3	$	65		$	228