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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 835
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-Section 55
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

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-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 3: 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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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Debt - Narrative (Details) $ in Millions	1 Months Ended				3 Months Ended							9 Months Ended
Debt - Narrative (Details) $ in Millions	Oct. 31, 2020 USD ($)	Oct. 31, 2020 GBP (£)	Oct. 31, 2020 AUD ($)	Oct. 31, 2020 EUR (€)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2020 GBP (£)	Jun. 30, 2020 USD ($)	Jun. 30, 2020 GBP (£)	Jun. 30, 2020 AUD ($)	Jun. 30, 2020 EUR (€)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2020 GBP (£)	Dec. 31, 2020 EUR (€)
Debt Instrument [Line Items]
Repayments of debt	$ 3,500,000,000											$ 2,926,000,000	$ 1,029,000,000
Commercial paper
Debt Instrument [Line Items]
Maximum borrowing capacity \| €															€ 1,000,000,000
Repayments of debt	772,000,000	£ 600,000,000
Senior notes \| Senior Notes Due 2024 and 2026
Debt Instrument [Line Items]
Principal amount						$ 1,000,000,000.0
Senior notes \| Senior Notes, Due 2024
Debt Instrument [Line Items]
Principal amount					$ 500,000,000	$ 500,000,000						$ 500,000,000
Effective interest rate					4.00%	4.00%						4.00%		4.00%	4.00%
Senior notes \| Senior Notes, Due 2026
Debt Instrument [Line Items]
Principal amount					$ 500,000,000	$ 500,000,000						$ 500,000,000
Effective interest rate					4.13%	4.13%						4.13%		4.13%	4.13%
Senior notes \| Senior notes due 2025
Debt Instrument [Line Items]
Principal amount \| £														£ 250,000,000
Effective interest rate					2.75%							2.75%		2.75%	2.75%
Senior notes \| Senior notes due 2026
Debt Instrument [Line Items]
Principal amount \| €															€ 650,000,000
Effective interest rate					1.75%							1.75%		1.75%	1.75%
Term loan
Debt Instrument [Line Items]
Repayments of debt					$ 1,441,000,000
Term loan \| Term Loan Payable, EUR, Due 2023
Debt Instrument [Line Items]
Repayments of debt \| €											€ 500,000,000
Term loan \| Term Loan Payable, EUR, Due 2022-2023
Debt Instrument [Line Items]
Effective interest rate					0.65%							0.65%		0.65%	0.65%
Repayments of debt	292,000,000			€ 250,000,000
Term loan \| Term Loan Payable, GBP, Due 2022
Debt Instrument [Line Items]
Repayments of debt \| £							£ 300,000,000		£ 150,000,000
Term loan \| Term Loan Payable, AUD, Due 2022
Debt Instrument [Line Items]
Repayments of debt	358,000,000		$ 500							$ 300
Term loan \| Term Loan Payable, USD, Due 2025
Debt Instrument [Line Items]
Repayments of debt	381,000,000							$ 100,000,000
Term loan \| Term Loan Payable, EUR, Due 2023-2024
Debt Instrument [Line Items]
Effective interest rate					0.80%							0.80%		0.80%	0.80%
Repayments of debt	410,000,000			€ 350,000,000
Revolving credit facility \| Line of Credit
Debt Instrument [Line Items]
Proceeds from debt issuance						$ 2,500,000,000
Maximum borrowing capacity					$ 4,000,000,000.0							$ 4,000,000,000.0
Repayments of debt	$ 1,250,000,000											$ 4,000,000,000.0