Financial Instruments - Forward Starting Derivatives (Details) - Designated as Hedging Instrument - Forward Interest Rate Swap	Mar. 31, 2021 USD ($)
Derivative [Line Items]
Amount Hedged	$ 1,050,000,000
Unsecured Senior Notes In Fiscal 2022
Derivative [Line Items]
Amount Hedged	$ 450,000,000
Effective Interest Rate	1.33%
Unsecured Senior Notes In Fiscal 2023
Derivative [Line Items]
Amount Hedged	$ 300,000,000
Effective Interest Rate	1.36%
Unsecured Senior Notes In Fiscal 2025
Derivative [Line Items]
Amount Hedged	$ 300,000,000
Effective Interest Rate	1.35%

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

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

Reference 2: 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 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

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant