| Cover - USD ($) $ in Millions | 12 Months Ended | ||
|---|---|---|---|
| Jun. 30, 2025 | Aug. 14, 2025 | Dec. 31, 2024 | |
| Cover [Abstract] | |||
| Document Type | 10-K/A | ||
| Document Annual Report | true | ||
| Document Period End Date | Jun. 30, 2025 | ||
| Current Fiscal Year End Date | --06-30 | ||
| Document Transition Report | false | ||
| Entity File Number | 001-36092 | ||
| Entity Registrant Name | Premier, Inc. | ||
| Entity Incorporation, State or Country Code | DE | ||
| Entity Tax Identification Number | 35-2477140 | ||
| Entity Address, Address Line One | 13520 Ballantyne Corporate Place | ||
| Entity Address, City or Town | Charlotte, | ||
| Entity Address, State or Province | NC | ||
| Entity Address, Postal Zip Code | 28277 | ||
| City Area Code | 704 | ||
| Local Phone Number | 357-0022 | ||
| Title of 12(b) Security | Class A Common Stock, $0.01 Par Value | ||
| Trading Symbol | PINC | ||
| Security Exchange Name | NASDAQ | ||
| Entity Well Known Seasoned Issuer | Yes | ||
| Entity Voluntary Filers | No | ||
| Entity Current Reporting Status | Yes | ||
| Entity Interactive Data Current | Yes | ||
| Entity Filer Category | Large Accelerated Filer | ||
| Entity Small Business | false | ||
| Entity Emerging Growth Company | false | ||
| ICFR Auditor Attestation Flag | true | ||
| Document Financial Statement Error Correction [Flag] | false | ||
| Entity Shell Company | false | ||
| Entity Public Float | $ 1,929.3 | ||
| Entity Common Stock, Shares Outstanding | 82,549,641 | ||
| Entity Central Index Key | 0001577916 | ||
| Document Fiscal Year Focus | 2025 | ||
| Document Fiscal Period Focus | FY | ||
| Amendment Flag | true | ||
| Amendment Description | This Amendment No. 1 on Form 10-K/A (“Form 10-K/A”) to the Annual Report on Form 10-K of Premier, Inc. (the “Company”) for the fiscal year ended June 30, 2025, originally filed with the Securities and Exchange Commission on August 19, 2025 (the “Original Filing”), is being filed solely for the purpose of including the information required by Part III of Form 10-K that we did not include in the Original Filing in reliance on General Instruction G(3) of Form 10-K. We are filing this Form 10-K/A pursuant to General Instruction G(3) of Form 10-K to include Part III information in our Form 10-K because we do not intend to file a definitive proxy statement for an annual meeting of shareholders containing such information within 120 days after the end of our fiscal year ended June 30, 2025.In addition, in connection with the filing of this Form 10-K/A and pursuant to the rules of the Securities and Exchange Commission (“SEC”), we are including with this Form 10-K/A new certifications of our principal executive officer and principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. Item 15 of Part IV has also been amended to reflect the filing of these new certifications.Except as described above, no other changes have been made to the Original Filing. This Form 10-K/A continues to speak as of the date of the Original Filing, and the Company has not updated the disclosures contained therein to reflect any events that occurred at a date subsequent to the date of the Original Filing, except for information set forth herein expressly stated to be as of a date which is subsequent to the date of the Original Filing. The filing of this Form 10-K/A is not a representation that any statements contained in the Company’s 2025 Annual Report on Form 10-K are true and complete as of any date other than the date of the Original Filing. This Form 10-K/A should be read in conjunction with the Original Filing.Ernst & Young, LLP (“EY”) issued reports on our consolidated financial statements, and the effectiveness of our internal control over financial reporting, within the Original Filing. As this 10-K/A speaks to the date of the Original Filing, EY’s reports speak only as to August 19, 2025. We have made no substantive changes to the Original Filing other than those noted above. |