Consolidated Balance Sheets (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	300,000us-gaap_PreferredStockSharesAuthorized	300,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued	0us-gaap_PreferredStockSharesIssued	0us-gaap_PreferredStockSharesIssued
Common stock, par value (usd per share)	$ 0.10	$ 0.10
Common stock, shares authorized	1,000,000,000us-gaap_CommonStockSharesAuthorized	1,000,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	638,700,000us-gaap_CommonStockSharesIssued	638,700,000us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	471,100,000us-gaap_CommonStockSharesOutstanding	480,200,000us-gaap_CommonStockSharesOutstanding
Treasury stock, shares	167,600,000us-gaap_TreasuryStockShares	158,500,000us-gaap_TreasuryStockShares
Short-term Investments [Member]
Assets related to the Company's outstanding commercial paper		$ 2,015.8
Cash and Cash Equivalents [Domain]
Assets related to the Company's outstanding commercial paper		$ 183.8

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