Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards classified as noncurrent.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	Jan. 01, 2018	Oct. 01, 2017	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred taxes on income		$ 6,303	$ 6,148
Retained earnings		$ 114,805	$ 110,551
Minimum [Member] \| Scenario, Forecast [Member] \| Accounting Standards Update 2016-16 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred taxes on income	$ 2,200
Retained earnings	1,200
Maximum [Member] \| Scenario, Forecast [Member] \| Accounting Standards Update 2016-16 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred taxes on income	2,500
Retained earnings	$ 1,500