Equity-Based Compensation (Narrative) (Details) shares in Millions, $ in Millions	9 Months Ended
Mar. 31, 2020 USD ($) shares	Mar. 31, 2019 Tranche shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total estimated compensation cost, not yet recognized, related to non-vested equity awards \| $	$ 165
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average future period unrecognized compensation cost related to equity based awards is expected to be recognized	1 year
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average future period unrecognized compensation cost related to equity based awards is expected to be recognized	2 years
Performance Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Stock units granted	1.4
Performance Stock Units \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payout range as a percentage of the target award	0.00%
Performance Stock Units \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Payout range as a percentage of the target award	200.00%
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Stock units granted	1.1	2.4
Number of tranches \| Tranche		2
Restricted Stock Units \| Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity awards vested, percentage		50.00%
Equity awards vesting date		Jun. 15, 2020
Restricted Stock Units \| Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity awards vesting date		Jun. 15, 2021
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Stock options granted	3.8	3.1
Stock options expiration period	7 years
Stock options outstanding	7.0
Stock Options \| Tranche One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity awards vested, percentage		50.00%
Equity awards vesting date		Jun. 15, 2020
Stock Options \| Tranche Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Equity awards vested, percentage		50.00%
Equity awards vesting date		Jun. 15, 2021

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Payout range on stock-based compensation award presented as a percentage of target award.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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