Goodwill and Intangible Assets, Net - Components Of Intangible Assets (Details) - USD ($) $ in Millions |
Sep. 30, 2016 |
Jun. 30, 2016 |
|---|---|---|
| Finite-Lived Intangible Assets [Line Items] | ||
| Original Cost | $ 351.5 | $ 347.6 |
| Accumulated Amortization | (247.7) | (239.8) |
| Intangible Assets, net | 103.8 | 107.8 |
| Customer lists | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Original Cost | 175.5 | 175.5 |
| Accumulated Amortization | (120.8) | (117.5) |
| Intangible Assets, net | 54.7 | 58.0 |
| Software | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Original Cost | 144.5 | 141.0 |
| Accumulated Amortization | (100.4) | (96.1) |
| Intangible Assets, net | 44.1 | 44.9 |
| Trademarks | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Original Cost | 25.0 | 25.0 |
| Accumulated Amortization | (23.6) | (23.5) |
| Intangible Assets, net | 1.4 | 1.5 |
| Other intangibles | ||
| Finite-Lived Intangible Assets [Line Items] | ||
| Original Cost | 6.5 | 6.1 |
| Accumulated Amortization | (2.9) | (2.7) |
| Intangible Assets, net | $ 3.6 | $ 3.4 |