Description of Business and Basis of Presentation (Policies)	3 Months Ended
Sep. 30, 2019
Accounting Policies [Abstract]
Principles of Consolidation and Combination	Intercompany transactions with 21CF or its affiliates and the Company are reflected in the historical Unaudited Combined Financial Statements for the period prior to the Distribution. All significant intracompany transactions and accounts within the Company’s consolidated and combined businesses have been eliminated. Investments in and advances to entities or joint ventures in which the Company has significant influence, but less than a controlling financial interest, are accounted for using the equity method. Significant influence is generally presumed to exist when the Company owns an interest between 20% and 50% and exercises significant influence. In accordance with Accounting Standards Codification (“ASC”) 321 “Investments—Equity Securities” (“ASC 321”), equity securities in which the Company has no significant influence (generally less than a 20% ownership interest) with readily determinable fair values are accounted for at fair value based on quoted market prices. Equity securities without readily determinable fair values are accounted for either at fair value or using the measurement alternative which is at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. All gains and losses on investments in equity securities are recognized in the Unaudited Consolidated and Combined Statements of Operations.
Use of Estimates	The preparation of the Company’s Unaudited Consolidated and Combined Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts that are reported in the Unaudited Consolidated and Combined Financial Statements and accompanying disclosures. Although these estimates are based on management’s best knowledge of current events and actions that the Company may undertake in the future, actual results may differ from those estimates.
Reclassifications and Adjustments	The Company’s fiscal year ends on June 30 of each year. Certain fiscal 2019 amounts have been reclassified to conform to the fiscal 2020 presentation.
Recently Adopted and Recently Issued Accounting Guidance Adopted	Recently Adopted and Recently Issued Accounting Guidance Adopted In February 2016, the Financial Accounting Standards Board issued Accounting Standards Update 2016-02, “Leases (Topic 842)” (“Topic 842”), as amended. Topic 842 requires recognition of lease liabilities and right-of-use (“ROU”) assets on the balance sheet and disclosure of key information about leasing arrangements. On July 1, 2019, the Company adopted Topic 842 on a modified retrospective basis and recorded operating lease liabilities and ROU assets of approximately $635 million and $585 million, respectively, at the date of adoption (See Note 6—Leases). The difference between the Company’s initial recognition of operating lease liabilities and ROU assets, at the date of adoption, was primarily a result of the reclassification of the deferred rent liability. The adoption of Topic 842 did not have a significant impact on the Statements of Operations. In accordance with the guidance in Topic 842, the Company elected not to reassess (i) whether any existing contracts are or contain leases, (ii) lease classification for existing leases or (iii) capitalization of initial direct costs for existing leases.
Concentrations of Credit Risk	Concentrations of Credit Risk Cash and cash equivalents are maintained with several financial institutions. The Company has deposits held with banks that exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand and are maintained with financial institutions of reputable credit and, therefore, bear minimal credit risk. Generally, the Company does not require collateral to secure receivables. As of September 30, 2019, the Company had one customer that accounted for approximately 10% of the Company’s receivables. As of June 30, 2019, the Company had no individual customers that accounted for 10% or more of the Company’s receivables.

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Disclosure of accounting policy for credit risk.

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Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting. The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.

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Disclosure of accounting policy for reclassifications that affects the comparability of the financial statements.

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Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.

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