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Long-Term Debt, Commercial Paper (Details) € in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2019 EUR (€)	Jul. 10, 2018 item
Commercial Paper Programs
Debt
Maximum borrowing capacity	$ 2,500.0
U.S. Commercial Paper Program
Debt
Average interest rate (as a percent)		1.85%	1.85%
Debt carrying amount, net of unamortized discount before deferred debt issuance costs	0.0	$ 160.0
Maximum borrowing capacity	$ 2,500.0
U.S. Commercial Paper Program | Maximum
Debt
Maturity term	397 days
Euro Commercial Paper Program
Debt
Average interest rate (as a percent)		(0.13%)	(0.13%)
Number of wholly-owned subsidiaries that entered into a euro-commercial paper program | item				1
Debt carrying amount, net of unamortized discount before deferred debt issuance costs	$ 0.0	$ 235.5	€ 210.0
Maximum borrowing capacity	$ 2,000.0
Euro Commercial Paper Program | Maximum
Debt
Maturity term	183 days

X

- Definition

Carrying amount, net of unamortized (discount) premium and before 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

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

The number of wholly-owned subsidiaries that entered into a euro-commercial paper program with the entity.

+ References

No definition available.

+ Details

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X

- 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.

+ Details

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X

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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X

- 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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- Details

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- Details

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- Details

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- Details

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