Derivative Instruments - Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020
Cross currency interest rate swaps
Derivative [Line Items]
Derivative, Notional Amount	$ 100
Interest rate swaps
Derivative [Line Items]
Derivative, Notional Amount	852	$ 837
Forward exchange contracts
Derivative [Line Items]
Derivative, Notional Amount	$ 1,300	$ 1,600

Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5579245-113959

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant