Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Millions |
6 Months Ended |
Jan. 31, 2016 |
Jan. 31, 2015 |
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Beginning Balance, net of tax |
|
$ (162.0)
|
$ (45.8)
|
| Other comprehensive (loss) income before reclassifications and tax |
|
(68.6)
|
(82.7)
|
| Tax benefit (expense) |
|
14.2
|
(3.2)
|
| Other comprehensive (loss) income before reclassifications, net of tax |
|
(54.4)
|
(85.9)
|
| Ending Balance, net of tax |
|
(209.4)
|
|
| Reclassification Out Of Accumulated Other Comprehensive Income |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Tax benefit (expense) |
|
(3.3)
|
(1.9)
|
| Reclassifications, before tax |
|
10.3
|
4.7
|
| Reclassifications, net of tax |
|
7.0
|
2.8
|
| Other comprehensive (loss) income, net of tax |
|
(47.4)
|
(83.1)
|
| Ending Balance, net of tax |
|
(209.4)
|
(128.9)
|
| Foreign currency translation adjustment |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Beginning Balance, net of tax |
[1] |
(70.8)
|
48.3
|
| Other comprehensive (loss) income before reclassifications and tax |
[1] |
(29.4)
|
(96.5)
|
| Tax benefit (expense) |
[1] |
0.0
|
0.0
|
| Other comprehensive (loss) income before reclassifications, net of tax |
[1] |
(29.4)
|
(96.5)
|
| Foreign currency translation adjustment | Reclassification Out Of Accumulated Other Comprehensive Income |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Tax benefit (expense) |
[1] |
0.0
|
0.0
|
| Reclassifications, before tax |
[1] |
0.0
|
0.0
|
| Reclassifications, net of tax |
[1] |
0.0
|
0.0
|
| Other comprehensive (loss) income, net of tax |
[1] |
(29.4)
|
(96.5)
|
| Ending Balance, net of tax |
[1] |
(100.2)
|
(48.2)
|
| Pension benefits |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Beginning Balance, net of tax |
|
(90.6)
|
(94.0)
|
| Other comprehensive (loss) income before reclassifications and tax |
|
(38.8)
|
11.8
|
| Tax benefit (expense) |
|
14.1
|
(2.5)
|
| Other comprehensive (loss) income before reclassifications, net of tax |
|
(24.7)
|
9.3
|
| Pension benefits | Reclassification Out Of Accumulated Other Comprehensive Income |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Tax benefit (expense) |
|
(3.4)
|
(1.9)
|
| Reclassifications, before tax |
|
10.8
|
4.8
|
| Reclassifications, net of tax |
[2] |
7.4
|
2.9
|
| Other comprehensive (loss) income, net of tax |
|
(17.3)
|
12.2
|
| Ending Balance, net of tax |
|
(107.9)
|
(81.8)
|
| Derivative financial instruments |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Beginning Balance, net of tax |
|
(0.6)
|
(0.1)
|
| Other comprehensive (loss) income before reclassifications and tax |
|
(0.4)
|
2.0
|
| Tax benefit (expense) |
|
0.1
|
(0.7)
|
| Other comprehensive (loss) income before reclassifications, net of tax |
|
(0.3)
|
1.3
|
| Derivative financial instruments | Reclassification Out Of Accumulated Other Comprehensive Income |
|
|
|
| Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |
|
|
|
| Tax benefit (expense) |
|
0.1
|
0.0
|
| Reclassifications, before tax |
|
(0.5)
|
(0.1)
|
| Reclassifications, net of tax |
[3] |
(0.4)
|
(0.1)
|
| Other comprehensive (loss) income, net of tax |
|
(0.7)
|
1.2
|
| Ending Balance, net of tax |
|
$ (1.3)
|
$ 1.1
|
|
|