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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

- Definition

The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629

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Balance Type:	credit
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Period Type:	instant

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Debt - Additional Information (Detail) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Mar. 31, 2021 EUR (€)	Sep. 30, 2020 USD ($)
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 17,718			$ 17,224
Notes 1.957% due February 11, 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,000
Debt Instrument, Interest Rate, Stated Percentage	1.957%		1.957%
Notes 3.125% due November 8, 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.125%		3.125%
Debt Instrument, Repurchased Face Amount	$ 1,000
Long-term Debt, Excluding Current Maturities	1,005
Debt Instrument, Repurchase Amount	1,019
Extinguishment of Debt, Gain (Loss), Net of Tax	$ (14)
Notes 1.213% due February 12, 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.213%		1.213%
Notes 1.213% due February 12, 2036 [Member] \| Euro Member Countries, Euro
Debt Instrument [Line Items]
Debt Instrument, Face Amount \| €			€ 600
Notes 1.213% due February 12, 2036 [Member] \| United States of America, Dollars
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 728
Notes 0.174% due June 4, 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	0.174%		0.174%
Long-term Debt, Excluding Current Maturities	$ 728
Debt Instrument, Repurchase Amount	730
Extinguishment of Debt, Gain (Loss), Net of Tax	(1)
Notes 0.174% due June 4, 2021 [Member] \| Euro Member Countries, Euro
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount \| €			€ 600
Notes 0.174% due June 4, 2021 [Member] \| United States of America, Dollars
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount	$ 728
Notes 2.894% due June 6, 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.894%		2.894%
Debt Instrument, Repurchased Face Amount		$ 265
Long-term Debt, Excluding Current Maturities		265
Debt Instrument, Repurchase Amount		275
Extinguishment of Debt, Gain (Loss), Net of Tax		$ (10)