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Debt and Financing Activities (Celesio Debt) (Narrative) (Details) € in Millions, £ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2015 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 | Jun. 30, 2015 EUR (€) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 GBP (£) | Mar. 31, 2015 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  |  |  | $ 9,700,000,000 |  | $ 9,700,000,000
Repayments of debt and capital lease obligations | $ 96,000,000 | $ 228,000,000 |  |  |  |  |
Accounts receivable sales facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  | 1,350,000,000 |  |
Line of credit facility, expiration date | Nov. 15, 2016 |  |  |  |  |  |
Proceeds from lines of credit | $ 0 |  |  |  |  |  |
Repayments of lines of credit |  | 0 |  |  |  |  |
Line of credit facility, covenant compliance | we were in compliance with all covenants |  | we were in compliance with all covenants |  |  |  |
Borrowings outstanding |  |  |  |  | 0 |  | 0
Revolving credit facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  | 1,300,000,000 |  |
Line of credit facility, expiration date | Sep. 23, 2016 |  |  |  |  |  |
Proceeds from lines of credit | $ 0 | 0 |  |  |  |  |
Line of credit facility, interest rate description | bear interest based upon either the London Interbank Offered Rate or a prime rate |  |  |  |  |  |
Borrowings outstanding |  |  |  |  | 0 |  | 0
Celesio | Bonds [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  | £ 60 | 89,000,000
Repayments of debt and capital lease obligations | $ 93,000,000 |  |  |  |  |  |
Celesio | Accounts receivable factoring facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  | 179,000,000 |  |
Line of credit facility, expiration date | Jan. 31, 2016 |  |  |  |  |  |
Proceeds from lines of credit | $ 285,000,000 | 758,000,000 |  |  |  |  |
Repayments of lines of credit | 295,000,000 | 746,000,000 |  |  |  |  |
Borrowings outstanding |  |  |  |  | 132,000,000 |  | 135,000,000
Celesio | Revolving credit facility |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility capacity |  |  |  |  | 1,400,000,000 |  |
Proceeds from lines of credit | 246,000,000 | 147,000,000 |  |  |  |  |
Repayments of lines of credit | $ 240,000,000 | 16,000,000 |  |  |  |  |
Borrowings outstanding |  |  |  |  | 40,000,000 |  | 29,000,000
Celesio | Revolving credit facility | Revolving credit facility due february two thousand eighteen |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Credit facility capacity | € |  |  |  | € 500 |  |  |
Line of credit facility, expiration date | Feb. 28, 2018 |  |  |  |  |  |
Proceeds from lines of credit | $ 0 | $ 0 |  |  |  |  |
Borrowings outstanding |  |  |  |  | $ 0 |  | 0
Four percent bonds due october eighteen two thousand sixteen | Celesio |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  |  | 4.00% | 4.00% |  |
Long-term debt |  |  |  |  | $ 402,000,000 |  | 388,000,000
Four percent bonds due october eighteen two thousand sixteen | Celesio | Bonds [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  |  |  | $ 984,000,000 |  |
Four point five percent bonds due april twenty six two thousand seventeen | Celesio |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  |  | 4.50% | 4.50% |  |
Long-term debt |  |  |  |  | $ 582,000,000 |  | 563,000,000
Four point five percent bonds due april twenty six two thousand seventeen | Celesio | Bonds [Member] |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  | $ 951,000,000

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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