Separation of Dealer Services (Notes)	12 Months Ended
Jun. 30, 2014
Separation of Dealer Services [Abstract]
Proposed spinoff transaction	NOTE 2. SEPARATION OF DEALER SERVICES On April 10, 2014, the Company announced that its Board of Directors approved a plan to spin-off the Company’s Dealer Services business into an independently publicly-traded company through a tax-free spin-off of 100% of Dealer Services to ADP shareholders. The Company has requested an opinion from Paul, Weiss, Rifkind, Wharton & Garrison LLP, its counsel, to the effect that, based on certain facts, assumptions, representations and undertakings set forth in the request, the distribution will qualify as a transaction that is tax-free under Section 355 and other related provisions of the Internal Revenue Code. The distribution is conditioned upon, among other things, the receipt by the Company of such a favorable opinion of counsel confirming the distribution’s tax-free status. The separation is subject to other conditions, including necessary regulatory approvals. ADP has also requested rulings from the IRS and other jurisdictions with respect to certain discrete and significant issues arising in connection with the transactions being effected in connection with the separation and distribution. On June 10, 2014, Dealer Services (under the name of “Dealer Services Holdings LLC”) filed a registration statement on Form 10 with the Securities and Exchange Commission. Additionally, Dealer Services Holdings LLC filed an amendment to its Form 10 on July 25, 2014. The financial presentation of Dealer Services in the Form 10 differs from the financial presentation of the Dealer Services segment in ADP’s financial statements due to adjustments made in the Form 10 to reflect the additional corporate expenses and other operating costs of Dealer Services as if it were a stand-alone company. Upon completion of the spin-off, ADP shareholders will have separate ownership interests in ADP and Dealer Services. ADP and Dealer Services will be two distinct businesses with separate ownership and management. To facilitate Dealer Services’ separation from ADP, ADP will provide certain services to Dealer Services during a transition period following completion of the spin-off. ADP expects to incur approximately $40.0 million to $50.0 million of incremental separation costs during the fiscal year ended June 30, 2015 ("fiscal 2015") related to the spin-off. Incremental costs associated with the spin-off of $14.9 million for fiscal 2014 are included in separation costs on the Statements of Consolidated Earnings and are principally related to professional services.

NOTE 2. SEPARATION OF DEALER SERVICES

On April 10, 2014, the Company announced that its Board of Directors approved a plan to spin-off the Company’s Dealer Services business into an independently publicly-traded company through a tax-free spin-off of 100% of Dealer Services to ADP shareholders. The Company has requested an opinion from Paul, Weiss, Rifkind, Wharton & Garrison LLP, its counsel, to the effect that, based on certain facts, assumptions, representations and undertakings set forth in the request, the distribution will qualify as a transaction that is tax-free under Section 355 and other related provisions of the Internal Revenue Code. The distribution is conditioned upon, among other things, the receipt by the Company of such a favorable opinion of counsel confirming the distribution’s tax-free status. The separation is subject to other conditions, including necessary regulatory approvals. ADP has also requested rulings from the IRS and other jurisdictions with respect to certain discrete and significant issues arising in connection with the transactions being effected in connection with the separation and distribution.

On June 10, 2014, Dealer Services (under the name of “Dealer Services Holdings LLC”) filed a registration statement on Form 10 with the Securities and Exchange Commission. Additionally, Dealer Services Holdings LLC filed an amendment to its Form 10 on July 25, 2014. The financial presentation of Dealer Services in the Form 10 differs from the financial presentation of the Dealer Services segment in ADP’s financial statements due to adjustments made in the Form 10 to reflect the additional corporate expenses and other operating costs of Dealer Services as if it were a stand-alone company.

Upon completion of the spin-off, ADP shareholders will have separate ownership interests in ADP and Dealer Services. ADP and Dealer Services will be two distinct businesses with separate ownership and management. To facilitate Dealer Services’ separation from ADP, ADP will provide certain services to Dealer Services during a transition period following completion of the spin-off. ADP expects to incur approximately $40.0 million to $50.0 million of incremental separation costs during the fiscal year ended June 30, 2015 ("fiscal 2015") related to the spin-off. Incremental costs associated with the spin-off of $14.9 million for fiscal 2014 are included in separation costs on the Statements of Consolidated Earnings and are principally related to professional services.