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v3.19.1

Debt and Lines of Credit - Schedule of Long-term Debt Outstanding (Parenthetical) (Details) | Mar. 31, 2019 | Dec. 31, 2018
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Notes due 2019 at 1.65% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 1.65% | 1.65%
Notes due 2020 at 1.75% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 1.75% | 1.75%
Notes due 2021 at 2.75% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 2.75% | 2.75%
Notes due 2022 at 1.85% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 1.85% | 1.85%
Notes due 2023 at 2.25% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 2.25% | 2.25%
Notes due 2039 at 3.875% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 3.875% | 3.875%
Notes due 2024 at 2.625% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 2.625% | 2.625%
Notes due 2027 at 2.90% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 2.90% | 2.90%
Notes due 2048 at 4.15% |  |
Debt Instrument [Line Items] |  |
Long-term debt stated interest rate (in percentage) | 4.15% | 4.15%

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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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