Summary of Significant Accounting Policies	3 Months Ended
Sep. 30, 2012
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation Our condensed consolidated financial statements include the accounts of all majority-owned and controlled subsidiaries, and all significant intercompany transactions and amounts have been eliminated. References to "we," "our" and similar pronouns in this Quarterly Report on Form 10-Q refer to Cardinal Health, Inc. and its majority-owned and controlled subsidiaries unless the context requires otherwise. The results of businesses acquired or disposed of are included in the condensed consolidated financial statements from the effective date of the acquisition or up to the date of disposal, respectively. Our condensed consolidated financial statements have been prepared in accordance with the U.S. Securities and Exchange Commission ("SEC") instructions to Quarterly Reports on Form 10-Q and include all of the information and disclosures required by accounting principles generally accepted in the United States ("GAAP") for interim financial reporting. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect amounts reported in the condensed consolidated financial statements and accompanying notes. Actual amounts may differ from these estimated amounts. In addition, operating results presented for this fiscal 2013 interim period are not necessarily indicative of the results that may be expected for the full fiscal year ending June 30, 2013. These condensed consolidated financial statements are unaudited and are presented pursuant to the rules and regulations of the SEC. Accordingly, the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (this "Form 10-Q") should be read in conjunction with the audited consolidated financial statements and related notes contained in our Annual Report on Form 10-K for the fiscal year ended June 30, 2012 (the "2012 Form 10-K"). In our opinion, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included. Except as disclosed elsewhere in this Form 10-Q, all such adjustments are of a normal and recurring nature. Spin-Off of CareFusion Effective August 31, 2009, we separated our clinical and medical products businesses through a distribution to our shareholders of 81 percent of the then outstanding common stock of CareFusion Corporation ("CareFusion") and retained the remaining shares of CareFusion common stock (the "Spin-Off"). During fiscal 2010 and 2011, we disposed of the remaining shares of CareFusion common stock. While we are a party to a separation agreement and various other agreements relating to the separation, including a tax matters agreement, we have determined that we have no significant continuing involvement in the operations of CareFusion. Accordingly, the operating results of CareFusion are presented within discontinued operations for all periods presented. Under the tax matters agreement, CareFusion is obligated to indemnify us for certain tax exposures and transaction taxes prior to the Spin-Off. The indemnification receivable was $267 million and $265 million at September 30, 2012 and June 30, 2012, respectively, and is included in other assets in the condensed consolidated balance sheets. Recent Financial Accounting Standards In June 2011, the Financial Accounting Standards Board ("FASB") issued amended accounting guidance related to the presentation of comprehensive income. This guidance requires that comprehensive income, the components of net income and the components of other comprehensive income be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In December 2011, the FASB deferred the effective date of the specific requirement to present items that are reclassified out of accumulated other comprehensive income to net income alongside their respective components of net income and other comprehensive income. We adopted this amended guidance on a retrospective basis beginning in the first quarter of fiscal 2013 and have elected to report comprehensive income and its components in a separate statement of comprehensive income in this Form 10-Q. The adoption of this guidance did not impact our financial position or results of operations.

Summary of Significant Accounting Policies

Basis of Presentation

Our condensed consolidated financial statements include the accounts of all majority-owned and controlled subsidiaries, and all significant intercompany transactions and amounts have been eliminated. References to "we," "our" and similar pronouns in this Quarterly Report on Form 10-Q refer to Cardinal Health, Inc. and its majority-owned and controlled subsidiaries unless the context requires otherwise. The results of businesses acquired or disposed of are included in the condensed consolidated financial statements from the effective date of the acquisition or up to the date of disposal, respectively.

Our condensed consolidated financial statements have been prepared in accordance with the U.S. Securities and Exchange Commission ("SEC") instructions to Quarterly Reports on Form 10-Q and include all of the information and disclosures required by accounting principles generally accepted in the United States ("GAAP") for interim financial reporting. The preparation of financial statements in conformity with GAAP requires us to make estimates and assumptions that affect amounts reported in the condensed consolidated financial statements and accompanying notes. Actual amounts may differ from these estimated amounts. In addition, operating results presented for this fiscal 2013 interim period are not necessarily indicative of the results that may be expected for the full fiscal year ending June 30, 2013.

These condensed consolidated financial statements are unaudited and are presented pursuant to the rules and regulations of the SEC. Accordingly, the condensed consolidated financial statements included in this Quarterly Report on Form 10-Q for the quarter ended September 30, 2012 (this "Form 10-Q") should be read in conjunction with the audited consolidated financial statements and related notes contained in our Annual Report on Form 10-K for the fiscal year ended June 30, 2012 (the "2012 Form 10-K"). In our opinion, all adjustments necessary for a fair presentation of the condensed consolidated financial statements have been included. Except as disclosed elsewhere in this Form 10-Q, all such adjustments are of a normal and recurring nature.

Spin-Off of CareFusion

Effective August 31, 2009, we separated our clinical and medical products businesses through a distribution to our shareholders of 81 percent of the then outstanding common stock of CareFusion Corporation ("CareFusion") and retained the remaining shares of CareFusion common stock (the "Spin-Off"). During fiscal 2010 and 2011, we disposed of the remaining shares of CareFusion common stock. While we are a party to a separation agreement and various other agreements relating to the separation, including a tax matters agreement, we have determined that we have no significant continuing involvement in the operations of CareFusion. Accordingly, the operating results of CareFusion are presented within discontinued operations for all periods presented.

Under the tax matters agreement, CareFusion is obligated to indemnify us for certain tax exposures and transaction taxes prior to the Spin-Off. The indemnification receivable was $267 million and $265 million at September 30, 2012 and June 30, 2012, respectively, and is included in other assets in the condensed consolidated balance sheets.

Recent Financial Accounting Standards

In June 2011, the Financial Accounting Standards Board ("FASB") issued amended accounting guidance related to the presentation of comprehensive income. This guidance requires that comprehensive income, the components of net income and the components of other comprehensive income be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In December 2011, the FASB deferred the effective date of the specific requirement to present items that are reclassified out of accumulated other comprehensive income to net income alongside their respective components of net income and other comprehensive income. We adopted this amended guidance on a retrospective basis beginning in the first quarter of fiscal 2013 and have elected to report comprehensive income and its components in a separate statement of comprehensive income in this Form 10-Q. The adoption of this guidance did not impact our financial position or results of operations.