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Hedging Activities - Narrative (Details) £ in Millions, $ in Millions, € in Billions | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2017 USD ($) | Jun. 30, 2017 EUR (€) | Jun. 30, 2017 GBP (£) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($)
Derivative [Line Items] |  |  |  |  |
Long-term debt outstanding |  |  |  | $ 7,949 | $ 8,362
Foreign Exchange Contract | Derivatives Designated for Hedge Accounting |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional values of financial instruments |  |  |  | 243 | 243
Foreign Exchange Contract | Derivatives not Designated for Hedge Accounting |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional values of financial instruments |  |  |  | 167 | 62
Cross Currency Swap | Derivatives Designated for Hedge Accounting |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional values of financial instruments |  |  |  | 3,223 | 2,663
Forward Contracts | Derivatives not Designated for Hedge Accounting |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Notional values of financial instruments |  |  |  | $ 177 | $ 173
Net Investment Hedging |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Losses from net investment hedges recorded in other comprehensive income | $ 114 |  |  |  |
Euro Denominated Notes | Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Long-term debt outstanding | € |  | € 1.2 |  |  |
British Pound Sterling Denominated Notes | Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Long-term debt outstanding | £ |  |  | £ 450 |  |

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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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 3: 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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