Capitalized Software Held for Internal Use, Useful Life

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Number of Largest Customers

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Revenue from Contract with Customer, Excluding Assessed Tax, Sales Returns

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No definition available.

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For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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-SubTopic 20
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The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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No definition available.

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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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No definition available.

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- Definition

Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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The change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods, which change has been reflected in the statement of income during the period.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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- Definition

Amount of loss from impairment of right-of-use asset from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Amount of lessee's right to use underlying asset under operating lease.

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- Definition

The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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No definition available.

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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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No definition available.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Significant Accounting Policies (Details)		3 Months Ended								12 Months Ended
Significant Accounting Policies (Details)	Apr. 01, 2019 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2020 USD ($) customer segment	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Apr. 01, 2018 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of operating segments \| segment										3
Restricted cash and restricted cash equivalents		$ 8,000,000				$ 0				$ 8,000,000	$ 0	$ 0
LIFO inventory (percentage)		60.00%				62.00%				60.00%	62.00%
LIFO reserve		$ 444,000,000				$ 696,000,000				$ 444,000,000	$ 696,000,000
Credits associated with last-in, first-out inventory method		138,000,000	$ 66,000,000	$ 33,000,000	$ 15,000,000	146,000,000	$ 21,000,000	$ 22,000,000	$ 21,000,000	252,000,000	210,000,000	99,000,000
Shipping and handling costs										219,028,000,000	202,565,000,000	197,173,000,000
Capitalized software held for internal use, net		400,000,000				394,000,000				400,000,000	394,000,000
Capitalized software held for internal use, accumulated amortization		1,300,000,000				$ 1,200,000,000				1,300,000,000	1,200,000,000
Sales returns from customers										3,100,000,000	2,900,000,000	3,100,000,000
Present value of lease liabilities		2,014,000,000								2,014,000,000
Operating lease ROU assets		$ 1,886,000,000								$ 1,886,000,000
Cumulative effect adjustment to opening balance of retained earnings	$ 11,000,000												$ 154,000,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Intangible assets, useful life										1 year
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, useful life										30 years
Intangible assets, useful life										38 years
Capitalized software held for internal use, useful life										10 years
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to opening balance of retained earnings	11,000,000												$ 154,000,000
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Present value of lease liabilities	2,200,000,000
Operating lease ROU assets	2,100,000,000
Impairment charges	89,000,000
Accounting Standards Update 2016-02 \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment to opening balance of retained earnings	$ 69,000,000
Shipping and Handling \| Selling, Distribution and Administrative Expenses
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shipping and handling costs										$ 1,000,000,000.0	$ 951,000,000	$ 914,000,000
Customer Concentration Risk \| Sales Revenue, Net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of largest customers \| customer										10
Percentage of total consolidated revenues (percent)										51.00%
Customer Concentration Risk \| Sales Revenue, Net \| CVS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of total consolidated revenues (percent)										20.00%
Customer Concentration Risk \| Accounts Receivable
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of total consolidated revenues (percent)										37.00%
Customer Concentration Risk \| Accounts Receivable \| CVS
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of total consolidated revenues (percent)										20.00%
Product Concentration Risk \| Sales Revenue, Net \| Distribution and Retail Business
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of total consolidated revenues (percent)										98.00%
Product Concentration Risk \| Sales Revenue, Net \| Services Business
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage of total consolidated revenues (percent)											2.00%