Interest expense related to debt borrowings during the period.

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Line of Credit Facility, Amount Pledged in Support of Bank Guarantees and Other Local Credit Lines

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Maximum incremental credit increases relating to the Revolving Credit Facility available and subject to certain conditions and the agreement of its lenders.

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Financial covenant relating to the revolving credit facility. As of any date, for the period of four fiscal quarters ended on or immediately prior to such date, the ratio of consolidated cash flow to the sum of interest payable on, and amortization of debt discount in respect of, all consolidated debt for borrowed money, as defined in the revolving credit facility agreement, must not be less than 3.50 to 1.00.

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Financial covenant relating to the revolving credit facility. As of any date, for the period of four fiscal quarters ended on or immediately prior to such date, the ratio of consolidated debt for borrowed money to consolidated cash flow, each as defined in the revolving credit facility agreement, must not exceed 4.00 to 1.00.

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Basis points to be added to the rate specified in the debt agreement, used to calculate the redemption amount of the related debt instrument.

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Long term debt change in control repurchase percentage.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure.

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Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

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Face (par) amount of debt instrument at time of issuance.

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-Name Accounting Standards Codification
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Contractual interest rate for funds borrowed, under the debt agreement.

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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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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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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.

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- Definition

The effective interest rate at the end of the reporting period.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt 5 (Details) - USD ($) $ in Millions	1 Months Ended							2 Months Ended	12 Months Ended
Debt 5 (Details) - USD ($) $ in Millions	Oct. 31, 2015	Aug. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Aug. 31, 2013	Nov. 30, 2009	Nov. 30, 2004	Dec. 01, 2014	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014	Oct. 20, 2015	Aug. 04, 2015	Jul. 08, 2015	Aug. 16, 2013	Nov. 13, 2009
Debt Disclosure [Abstract]
Interest expense									$ 81	$ 77	$ 75
Debt Instruments
Proceeds from issuance of debt									1,100	0	498
Debt instrument, Discount									4	4
Revolving Credit Facility
Debt Instruments
Maximum committed amount available under revolving credit facility									1,000
Maximum available credit increase under revolving credit facility									$ 500
Proceeds from borrowing under revolving credit facility			$ 400
Debt instrument, Interest rate														1.19%
Repayment of borrowing under revolving credit facility		$ 400
Interest expense related to borrowing under revolving credit facility									less than $1 million
Borrowing activity under revolving credit facility										0	$ 0
Outstanding borrowings									$ 0	0
Revolving credit facility, Covenant description									The revolving credit facility contains customary covenants for borrowings of this type, including two financial covenants: (i) as of any date, for the period of four fiscal quarters ended on or immediately prior to such date, the ratio of consolidated debt for borrowed money to consolidated cash flow, each as defined in the revolving credit facility agreement, must not exceed 4.00 to 1.00; and (ii) as of any date, for the period of four fiscal quarters ended on or immediately prior to such date, the ratio of consolidated cash flow to the sum of interest payable on, and amortization of debt discount in respect of, all consolidated debt for borrowed money, as defined in the credit agreement, must not be less than 3.50 to 1.00.
Revolving credit facility, Financial covenant, Ratio of consolidated debt for borrowed money to consolidated cash flow									400.00%
Revolving credit facility, Financial covenant, Ratio of consolidated cash flow to the sum of interest payable and amortization of debt discount on all consolidated debt for borrowed money									350.00%
Revolving credit facility, Covenant compliance									At March 31, 2016, the Company was in compliance with all covenants.
Debt instrument, Maturity date				Jun. 07, 2019
Base Rate Borrowings
Debt Instruments
Interest rate that would have applied at year end under revolving credit facility									3.63%
Eurocurrency Rate Borrowings
Debt Instruments
Interest rate that would have applied at year end under revolving credit facility									1.44%
5.375% Senior Notes due December 2019 (5.375% Notes)
Debt Instruments
Debt instrument, Interest rate																5.375%
Debt instrument, Face amount																$ 750
Debt instrument, Maturity date						Dec. 01, 2019
Additional basis points (make-whole premium) for redemption of Senior Notes																0.30%
Change of control repurchase percentage for Senior Notes																101.00%
3.600% Senior Notes due August 2020 (3.600% Notes)
Debt Instruments
Debt instrument, Interest rate													3.60%
Debt instrument, Face amount													$ 400
Debt instrument, Maturity date		Aug. 01, 2020
Additional basis points (make-whole premium) for redemption of Senior Notes													0.30%
Change of control repurchase percentage for Senior Notes													101.00%
Proceeds from issuance of debt		$ 400
Debt instrument, Discount		less than $1 million
Debt issuance costs capitalized													$ 3
2.875% Senior Notes due August 2018 (2.875% Notes)
Debt Instruments
Debt instrument, Interest rate															2.875%
Debt instrument, Face amount															$ 250
Debt instrument, Maturity date					Aug. 15, 2018
Additional basis points (make-whole premium) for redemption of Senior Notes															0.25%
Change of control repurchase percentage for Senior Notes															101.00%
Proceeds from issuance of debt					$ 249
Debt issuance costs capitalized															$ 2
Debt instrument, Discount															$ 1
4.500% Senior Notes due August 2023 (4.500% Notes)
Debt Instruments
Debt instrument, Interest rate															4.50%
Debt instrument, Face amount															$ 250
Debt instrument, Maturity date					Aug. 15, 2023
Additional basis points (make-whole premium) for redemption of Senior Notes															0.30%
Change of control repurchase percentage for Senior Notes															101.00%
Proceeds from issuance of debt					$ 249
Debt issuance costs capitalized															$ 2
Debt instrument, Discount															$ 1
6.125% Senior Notes due December 2014
Debt Instruments
Debt instrument, Interest rate								6.125%
Debt instrument, Face amount								$ 500
Debt instrument, Maturity date							Dec. 01, 2014
Repayment of debt obligations								$ 500
Term Loan due April 2022
Debt Instruments
Debt instrument, Face amount												$ 300
Debt instrument, Maturity date	Apr. 20, 2022
Term Loan due April 2022 \| Base Rate
Debt Instruments
Debt instrument, Interest rate									0.50%
Term Loan due April 2022 \| Base Rate \| Minimum
Debt Instruments
Debt instrument, Interest rate												0.125%
Term Loan due April 2022 \| Base Rate \| Maximum
Debt Instruments
Debt instrument, Interest rate												1.00%
Term Loan due April 2022 \| Eurodollar Rate
Debt Instruments
Debt instrument, Interest rate									1.50%
Term Loan due April 2022 \| Eurodollar Rate \| Minimum
Debt Instruments
Debt instrument, Interest rate												1.125%
Term Loan due April 2022 \| Eurodollar Rate \| Maximum
Debt Instruments
Debt instrument, Interest rate												2.00%
Term Loan due April 2022 \| April 1, 2017 through January 1, 2021
Debt Instruments
Debt instrument, Principal amortization payments, Percentage	1.25%
Term Loan due April 2022 \| April 1, 2021 and Thereafter
Debt Instruments
Debt instrument, Principal amortization payments, Percentage	2.50%
Multi-Currency Line of Credit
Debt Instruments
Outstanding borrowings									$ 0	0
Amount pledged in support of bank guarantees and other local credit lines									$ 55	$ 27