Asset Dispositions (Details) - NexTraq - Held-for-sale - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2017	Jul. 27, 2017
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]
Consideration		$ 316.0
Gain on disposal	$ 175.0
Tax effect of gain from disposal	$ 65.8

Amount of tax expense (benefit) on gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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