Share-based Compensation - Share-based Compensation Expense (Details) - USD ($)
$ in Millions |
7 Months Ended |
12 Months Ended |
Jun. 30, 2015 |
Feb. 01, 2015 |
Jun. 30, 2017 |
Jun. 30, 2016 |
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
$ 1.0
|
|
$ 10.2
|
$ 2.2
|
| Income tax benefit for share-based compensation |
0.4
|
|
4.0
|
0.9
|
| Selling expenses [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
0.4
|
|
4.2
|
0.9
|
| General and administrative expenses [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
0.6
|
|
6.0
|
1.3
|
| Non-qualified Stock Options [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
1.0
|
|
10.2
|
2.2
|
| Stock Appreciation Rights [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
$ 0.0
|
|
$ 0.0
|
$ 0.0
|
| Predecessor [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
|
$ 20.1
|
|
|
| Income tax benefit for share-based compensation |
|
7.8
|
|
|
| Predecessor [Member] | Selling expenses [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
|
8.5
|
|
|
| Predecessor [Member] | General and administrative expenses [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
|
11.6
|
|
|
| Predecessor [Member] | Non-qualified Stock Options [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
|
17.3
|
|
|
| Predecessor [Member] | Stock Appreciation Rights [Member] |
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |
|
|
|
|
| Share-based compensation expense |
|
$ 2.8
|
|
|