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Long-Term Debt and Short-Term Borrowings - Long-Term Debt Maturities (Details) € in Millions, $ in Millions | 1 Months Ended | 3 Months Ended |
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Nov. 30, 2018 EUR (€) | Aug. 31, 2018 USD ($) | Jun. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) | Oct. 31, 2017 USD ($)
Debt instrument |  |  |  |  |  |
Debt repurchases |  |  |  |  |  | $ 305
Loss on early debt extinguishment |  |  |  |  | $ 96 |
Repayment of debt | € 500 | $ 450 |  |  |  |
Fixed rate medium term notes repaid June 2017 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Repayment of debt |  |  | $ 650 |  |  |
Notes Due 2028 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Debt repurchases |  |  |  |  |  | 110
Principal amount |  |  |  |  |  | $ 330
Interest rate, stated percentage (as a percent) |  |  |  |  |  | 6.375%
Notes Due 2037 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Debt repurchases |  |  |  |  |  | $ 195
Principal amount |  |  |  |  |  | $ 750
Interest rate, stated percentage (as a percent) |  |  |  |  |  | 5.70%
Fixed rate medium term notes repaid 2016 |  |  |  |  |  |
Debt instrument |  |  |  |  |  |
Repayment of debt |  |  |  | $ 1,000 |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Face (par) amount of the original debt instrument that was repurchased. + References No definition available. + Details
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