Restructuring Liabilities (Details) - USD ($)
$ in Millions |
12 Months Ended |
|
|
|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring liability at beginning of year |
$ 41.1
|
$ 37.3
|
$ 61.8
|
|
|
|
| Accounting change |
|
|
|
|
$ (2.4)
|
|
| Restructuring liability as of January 1, 2019, as adjusted for accounting change |
|
|
|
|
38.7
|
|
| Restructuring charges |
89.9
|
96.4
|
48.4
|
|
|
|
| Cash paid |
(96.6)
|
(86.2)
|
(79.0)
|
|
|
|
| Foreign currency translation adjustments and other |
(0.1)
|
(6.4)
|
6.1
|
|
|
|
| Restructuring liability at end of year |
31.9
|
41.1
|
37.3
|
|
|
|
| Current portion |
|
|
|
$ 22.7
|
26.2
|
$ 18.9
|
| Noncurrent portion |
|
|
|
9.2
|
14.9
|
18.4
|
| Total |
41.1
|
37.3
|
37.3
|
31.9
|
41.1
|
37.3
|
| Employee severance and termination |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring liability at beginning of year |
14.7
|
11.3
|
23.0
|
|
|
|
| Accounting change |
|
|
|
|
0.0
|
|
| Restructuring liability as of January 1, 2019, as adjusted for accounting change |
|
|
|
|
14.7
|
|
| Restructuring charges |
84.3
|
42.2
|
35.2
|
|
|
|
| Cash paid |
(81.3)
|
(35.5)
|
(50.0)
|
|
|
|
| Foreign currency translation adjustments and other |
1.4
|
(3.3)
|
3.1
|
|
|
|
| Restructuring liability at end of year |
19.1
|
14.7
|
11.3
|
|
|
|
| Current portion |
|
|
|
17.6
|
13.3
|
9.9
|
| Noncurrent portion |
|
|
|
1.5
|
1.4
|
1.4
|
| Total |
19.1
|
11.3
|
11.3
|
19.1
|
14.7
|
11.3
|
| Employee severance and termination | Central and Corporate |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring charges |
32.3
|
14.2
|
10.0
|
|
|
|
| Employee severance and termination | U.K./Ireland |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring charges |
40.2
|
23.7
|
20.1
|
|
|
|
| Employee severance and termination | Switzerland |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring charges |
10.5
|
|
|
|
|
|
| Office closures |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring liability at beginning of year |
8.5
|
9.5
|
7.1
|
|
|
|
| Accounting change |
|
|
|
|
(2.4)
|
|
| Restructuring liability as of January 1, 2019, as adjusted for accounting change |
|
|
|
|
6.1
|
|
| Restructuring charges |
1.1
|
5.5
|
8.3
|
|
|
|
| Cash paid |
(4.4)
|
(6.0)
|
(6.8)
|
|
|
|
| Foreign currency translation adjustments and other |
(0.6)
|
(0.5)
|
0.9
|
|
|
|
| Restructuring liability at end of year |
2.2
|
8.5
|
9.5
|
|
|
|
| Current portion |
|
|
|
1.9
|
4.5
|
4.4
|
| Noncurrent portion |
|
|
|
0.3
|
4.0
|
5.1
|
| Total |
8.5
|
9.5
|
9.5
|
2.2
|
8.5
|
9.5
|
| Contract termination |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring liability at beginning of year |
17.9
|
16.5
|
31.7
|
|
|
|
| Accounting change |
|
|
|
|
0.0
|
|
| Restructuring liability as of January 1, 2019, as adjusted for accounting change |
|
|
|
|
17.9
|
|
| Restructuring charges |
4.5
|
48.7
|
4.9
|
|
|
|
| Cash paid |
(10.9)
|
(44.7)
|
(22.2)
|
|
|
|
| Foreign currency translation adjustments and other |
(0.9)
|
(2.6)
|
2.1
|
|
|
|
| Restructuring liability at end of year |
10.6
|
17.9
|
16.5
|
|
|
|
| Current portion |
|
|
|
3.2
|
8.4
|
4.6
|
| Noncurrent portion |
|
|
|
7.4
|
9.5
|
11.9
|
| Total |
$ 17.9
|
16.5
|
$ 16.5
|
$ 10.6
|
$ 17.9
|
$ 16.5
|
| Contract termination | Belgium |
|
|
|
|
|
|
| Restructuring Reserve [Roll Forward] |
|
|
|
|
|
|
| Restructuring charges |
|
$ 40.5
|
|
|
|
|