Debt - Summary of Term Debt (Detail) - USD ($)	3 Months Ended	12 Months Ended
Dec. 31, 2016	Sep. 24, 2016
Debt Instrument [Line Items]
Total term debt	$ 77,378,000,000	$ 78,384,000,000
Unamortized premium/(discount) and issuance costs, net	(166,000,000)	(174,000,000)
Hedge accounting fair value adjustments	(156,000,000)	717,000,000
Less: Current portion of long-term debt	(3,499,000,000)	(3,500,000,000)
Total long-term debt	73,557,000,000	75,427,000,000
2013 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	17,000,000,000
2013 debt issuance \| Floating-rate notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 2,000,000,000	$ 2,000,000,000
Debt instrument maturity year, start	2018
Debt instrument maturity year, end	2018
2013 debt issuance \| Floating-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.10%	1.10%
2013 debt issuance \| Floating-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.10%	1.10%
2013 debt issuance \| Fixed-rate 1.000% - 3.850% notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 12,500,000,000	$ 12,500,000,000
Debt instrument maturity year, start	2018
Debt instrument maturity year, end	2043
2013 debt issuance \| Fixed-rate 1.000% - 3.850% notes \| Minimum
Debt Instrument [Line Items]
Debt instrument interest rate	1.00%
Debt instrument, effective interest rate	1.08%	1.08%
2013 debt issuance \| Fixed-rate 1.000% - 3.850% notes \| Maximum
Debt Instrument [Line Items]
Debt instrument interest rate	3.85%
Debt instrument, effective interest rate	3.91%	3.91%
2014 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	$ 12,000,000,000
2014 debt issuance \| Floating-rate notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 2,000,000,000	$ 2,000,000,000
Debt instrument maturity year, start	2017
Debt instrument maturity year, end	2019
2014 debt issuance \| Floating-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	0.95%	0.86%
2014 debt issuance \| Floating-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.18%	1.09%
2014 debt issuance \| Fixed-rate 1.050% - 4.450% notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 10,000,000,000	$ 10,000,000,000
Debt instrument maturity year, start	2017
Debt instrument maturity year, end	2044
2014 debt issuance \| Fixed-rate 1.050% - 4.450% notes \| Minimum
Debt Instrument [Line Items]
Debt instrument interest rate	1.05%
Debt instrument, effective interest rate	0.95%	0.85%
2014 debt issuance \| Fixed-rate 1.050% - 4.450% notes \| Maximum
Debt Instrument [Line Items]
Debt instrument interest rate	4.45%
Debt instrument, effective interest rate	4.48%	4.48%
2015 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	$ 27,300,000,000.0
2015 debt issuance \| Floating-rate notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 1,753,000,000	$ 1,781,000,000
Debt instrument maturity year, start	2017
Debt instrument maturity year, end	2020
2015 debt issuance \| Floating-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	0.95%	0.87%
2015 debt issuance \| Floating-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.87%	1.87%
2015 debt issuance \| Fixed-rate 0.350% - 4.375% notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 24,225,000,000	$ 25,144,000,000
Debt instrument maturity year, start	2017
Debt instrument maturity year, end	2045
2015 debt issuance \| Fixed-rate 0.350% - 4.375% notes \| Minimum
Debt Instrument [Line Items]
Debt instrument interest rate	0.35%
Debt instrument, effective interest rate	0.28%	0.28%
2015 debt issuance \| Fixed-rate 0.350% - 4.375% notes \| Maximum
Debt Instrument [Line Items]
Debt instrument interest rate	4.375%
Debt instrument, effective interest rate	4.51%	4.51%
2016 debt issuance
Debt Instrument [Line Items]
Debt instrument, face amount	$ 24,900,000,000.0
2016 debt issuance \| Floating-rate notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 1,350,000,000	$ 1,350,000,000
Debt instrument maturity year, start	2019
Debt instrument maturity year, end	2021
2016 debt issuance \| Floating-rate notes \| Minimum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	1.02%	0.91%
2016 debt issuance \| Floating-rate notes \| Maximum
Debt Instrument [Line Items]
Debt instrument, effective interest rate	2.05%	1.95%
2016 debt issuance \| Fixed-rate 1.100% - 4.650% notes
Debt Instrument [Line Items]
Debt instrument, senior notes	$ 23,550,000,000	$ 23,609,000,000
Debt instrument maturity year, start	2018
Debt instrument maturity year, end	2046
2016 debt issuance \| Fixed-rate 1.100% - 4.650% notes \| Minimum
Debt Instrument [Line Items]
Debt instrument interest rate	1.10%
Debt instrument, effective interest rate	1.13%	1.13%
2016 debt issuance \| Fixed-rate 1.100% - 4.650% notes \| Maximum
Debt Instrument [Line Items]
Debt instrument interest rate	4.65%
Debt instrument, effective interest rate	4.78%	4.58%

Latest year the outstanding debt instruments are required to be repaid.

No definition available.

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Earliest year the outstanding debt instruments are required to be repaid.

+ References

No definition available.

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- Definition

Amount as of the balance sheet date of the adjustment to the carrying value of an interest bearing hedged item made under an interest rate fair value hedge.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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- Definition

The average effective interest rate during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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-Publisher FASB
-Name Accounting Standards Codification
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