Fair Values of Derivative Instruments (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Short-term Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 118	$ 100
Net amount, assets	99	80
Short-term Investments | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Assets	113	100
Gross amounts of derivatives offset on the balance sheet, assets	(14)	(20)
Net amounts presented on the balance sheet, assets	99	80
Gross amounts of derivatives not offset on the balance sheet, assets	0	0
Cash collateral received, assets	0	0
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	395	336
Net amount, assets	260	204
Other Current Assets | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Assets	395	336
Gross amounts of derivatives offset on the balance sheet, assets	(135)	(132)
Net amounts presented on the balance sheet, assets	260	204
Gross amounts of derivatives not offset on the balance sheet, assets	0	0
Cash collateral received, assets	0	0
Equity and Other Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	0	67
Net amount, assets	0	0
Equity and Other Investments | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Assets	0	67
Gross amounts of derivatives offset on the balance sheet, assets	0	(67)
Net amounts presented on the balance sheet, assets	0	0
Gross amounts of derivatives not offset on the balance sheet, assets	0	0
Cash collateral received, assets	0	0
Other Long-term Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	25	6
Net amount, assets	22	(2)
Other Long-term Assets | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Assets	25	6
Gross amounts of derivatives offset on the balance sheet, assets	(3)	(8)
Net amounts presented on the balance sheet, assets	22	(2)
Gross amounts of derivatives not offset on the balance sheet, assets	0	0
Cash collateral received, assets	0	0
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(203)	(337)
Net amount, liabilities	(288)	(341)
Other Current Liabilities | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(203)	(334)
Gross amounts of derivatives offset on the balance sheet, liabilities	150	221
Net amounts presented on the balance sheet, liabilities	(53)	(113)
Gross amounts of derivatives not offset on the balance sheet, liabilities	0	0
Cash collateral received, liabilities	(235)	(228)
Other Long-term Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(4)	(8)
Net amount, liabilities	(1)	(1)
Other Long-term Liabilities | Eligible for Offsetting
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(4)	(8)
Gross amounts of derivatives offset on the balance sheet, liabilities	3	7
Net amounts presented on the balance sheet, liabilities	(1)	(1)
Gross amounts of derivatives not offset on the balance sheet, liabilities	0	0
Cash collateral received, liabilities	0	0
Non-designated Hedge Derivatives | Short-term Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	23	20
Non-designated Hedge Derivatives | Short-term Investments | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	10	9
Non-designated Hedge Derivatives | Short-term Investments | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	2	3
Non-designated Hedge Derivatives | Short-term Investments | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	11	3
Non-designated Hedge Derivatives | Short-term Investments | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	5
Non-designated Hedge Derivatives | Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	221	203
Non-designated Hedge Derivatives | Other Current Assets | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	221	203
Non-designated Hedge Derivatives | Other Current Assets | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Current Assets | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Current Assets | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Equity and Other Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Equity and Other Investments | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Equity and Other Investments | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Equity and Other Investments | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Equity and Other Investments | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Long-term Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	25	6
Non-designated Hedge Derivatives | Other Long-term Assets | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	25	6
Non-designated Hedge Derivatives | Other Long-term Assets | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Long-term Assets | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Long-term Assets | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Non-designated Hedge Derivatives | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(203)	(148)
Non-designated Hedge Derivatives | Other Current Liabilities | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(193)	(134)
Non-designated Hedge Derivatives | Other Current Liabilities | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(7)	(6)
Non-designated Hedge Derivatives | Other Current Liabilities | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(2)	(7)
Non-designated Hedge Derivatives | Other Current Liabilities | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(1)	(1)
Non-designated Hedge Derivatives | Other Long-term Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(4)	(8)
Non-designated Hedge Derivatives | Other Long-term Liabilities | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	(4)	(8)
Non-designated Hedge Derivatives | Other Long-term Liabilities | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Non-designated Hedge Derivatives | Other Long-term Liabilities | Interest Rate Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Non-designated Hedge Derivatives | Other Long-term Liabilities | Credit Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Designated Hedge Derivatives | Short-term Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	95	80
Designated Hedge Derivatives | Short-term Investments | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	95	80
Designated Hedge Derivatives | Short-term Investments | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	174	133
Designated Hedge Derivatives | Other Current Assets | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	174	133
Designated Hedge Derivatives | Other Current Assets | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Equity and Other Investments
Derivatives, Fair Value [Line Items]
Derivative Assets	0	67
Designated Hedge Derivatives | Equity and Other Investments | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Equity and Other Investments | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	67
Designated Hedge Derivatives | Other Long-term Assets
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Other Long-term Assets | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Other Long-term Assets | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Assets	0	0
Designated Hedge Derivatives | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	(189)
Designated Hedge Derivatives | Other Current Liabilities | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	(3)
Designated Hedge Derivatives | Other Current Liabilities | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	(186)
Designated Hedge Derivatives | Other Long-term Liabilities
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Designated Hedge Derivatives | Other Long-term Liabilities | Foreign Exchange Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	0	0
Designated Hedge Derivatives | Other Long-term Liabilities | Equity Contracts
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 0	$ 0