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Schedule I - Short-Term Notes Receivable from Related Parties (Details) - WEC Energy Group - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
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Notes to parent company financial statements |  |
Short-term notes receivable from related parties | $ 76.4 | $ 123.2
Integrys |  |
Notes to parent company financial statements |  |
Short-term notes receivable from related parties | 42.0 | 95.1
Bostco |  |
Notes to parent company financial statements |  |
Short-term notes receivable from related parties | 18.5 | 19.6
Wispark |  |
Notes to parent company financial statements |  |
Short-term notes receivable from related parties | $ 15.9 | $ 8.5

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