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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of countries in which the entity operates as of balance sheet date.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - ADDITIONAL INFORMATION (Details)	6 Months Ended	12 Months Ended
	Dec. 31, 2018 USD ($)	Jun. 30, 2019 USD ($) countries	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Number of Countries in which Entity Operates \| countries		180
Number of Countries With On The Ground Operations \| countries		70
Research and Development Expense		$ 1,900,000,000	$ 1,900,000,000	$ 1,900,000,000
Advertising Expense		$ 6,800,000,000	7,100,000,000	$ 7,100,000,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ (553,000,000)
Customer Relationships, Brands, and Other Non-Contractual Intangible Assets [Member] \| Minimum
Finite-Lived Intangible Asset, Useful Life		5 years
Customer Relationships, Brands, and Other Non-Contractual Intangible Assets [Member] \| Maximum
Finite-Lived Intangible Asset, Useful Life		30 years
Furniture and Fixtures
Property, Plant and Equipment, Useful Life		15 years
Computer Equipment \| Minimum
Property, Plant and Equipment, Useful Life		3 years
Computer Equipment \| Maximum
Property, Plant and Equipment, Useful Life		5 years
Machinery and Equipment \| Minimum
Property, Plant and Equipment, Useful Life		3 years
Machinery and Equipment \| Maximum
Property, Plant and Equipment, Useful Life		20 years
Buildings
Property, Plant and Equipment, Useful Life		40 years
Reclassification from AOCI to Retained Earnings for Tax Effects [Domain] \| Retained Earnings
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			326,000,000
Reclassification from AOCI to Retained Earnings for Tax Effects [Domain] \| Other Comprehensive Income (Loss)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			326,000,000
Payments to Customers \| Selling, General and Administrative Expenses
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			309,000,000
Customer and Consumer Promotional Spending \| Retained Earnings
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			534,000,000
Leasing Arrangement [Member]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			$ 0.01