Assets Held-for-Sale, Discontinued Operations, and Dispositions (Major Components of Assets and Liabilities Held-for-Sale) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017
Current assets
Total current assets	$ 713.1	$ 0.0
Current liabilities
Total current liabilities	198.4	$ 0.0
Discontinued operations, held-for-sale
Current assets
Cash and cash equivalents	2.3
Accounts receivable, net	94.6
Inventories	1.1
Other current assets	9.4
Total current assets	107.4
Net property, plant, and equipment	14.1
Other assets	1.0
Intangible assets, net	113.1
Goodwill	477.5
Total assets held-for-sale	713.1
Current liabilities
Accounts payable	45.2
Accrued expenses and other liabilities	15.1
Current portion of unearned revenues	109.4
Total current liabilities	169.7
Unearned revenues	28.0
Other noncurrent liabilities	0.7
Total liabilities associated with assets held-for-sale	$ 198.4