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v3.19.3.a.u2

Debt - Short-term Borrowings (Details) |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 19, 2018 USD ($) option | May 06, 2016 | Dec. 31, 2017 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Short Term Debt [Line Items] |  |  |  |  |
Short-term borrowings outstanding |  |  | $ 633,700,000 | $ 204,700,000 | $ 328,400,000
Domestic Commercial Paper Program | Commercial Paper |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Short-term borrowings outstanding |  |  | $ 274,800,000 | $ 191,900,000 | $ 291,400,000
Weighted average interest rate |  |  | 1.90% | 2.10% | 3.00%
Five Year Credit Agreement, July 2018 | Line of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Maximum borrowing capacity | $ 2,000,000,000.000 |  |  |  |
Number of extension options | option | 2 |  |  |  |
Extension term | 1 year |  |  |  |
Maximum borrowing capacity after exercising extension option | $ 2,750,000,000 |  |  |  |
Short-term borrowings outstanding |  |  |  | $ 0 | $ 0
Five Year Credit Agreement, July 2018 | Letter of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Maximum borrowing capacity | $ 250,000,000.0 |  |  |  |
Five Year Credit Agreement, July 2018 | Line of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Debt instrument term |  |  | 5 years |  |
Foreign Programs |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Short-term borrowings outstanding |  |  | $ 9,000,000.0 | $ 12,800,000 | $ 37,000,000.0
Weighted average interest rate |  |  | 3.20% | 4.30% | 9.30%
Five Year Credit Agreement, September 2017 | Line of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Debt instrument term |  |  | 5 years |  |
Maximum borrowing capacity |  |  |  | $ 625,000,000.0 |
Five Year Credit Agreement, May 2016 | Line of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Debt instrument term |  | 5 years |  |  |
Five Year Credit Agreement, May 2016 | Letter of Credit |  |  |  |  |
Short Term Debt [Line Items] |  |  |  |  |
Maximum borrowing capacity |  |  |  | 875,000,000.0 |
Short-term borrowings outstanding |  |  | $ 350,000,000.0 | $ 0 | $ 0

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