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Borrowings - Schedule of Borrowings 1 (Details) | Jun. 30, 2017
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4.5% Senior Notes, due December 2020 |
Debt Instrument [Line Items] |
Stated interest rate | 4.50%
4.2% Senior Notes, due December 2021 |
Debt Instrument [Line Items] |
Stated interest rate | 4.20%
3.2% Senior Notes, due June 2023 |
Debt Instrument [Line Items] |
Stated interest rate | 3.20%
3.37% Senior Notes, due June 2025 |
Debt Instrument [Line Items] |
Stated interest rate | 3.37%

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