Long-lived Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Goodwill [Roll Forward] |
|
|
| Goodwill beginning balance |
$ 13,715.8
|
$ 14,354.1
|
| Acquisitions and related adjustments |
48.7
|
26.6
|
| Foreign currency translation adjustments |
287.6
|
(664.9)
|
| Goodwill ending balance |
14,052.1
|
13,715.8
|
| U.K./Ireland |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill beginning balance |
7,671.0
|
8,134.1
|
| Acquisitions and related adjustments |
0.0
|
2.0
|
| Foreign currency translation adjustments |
294.4
|
(465.1)
|
| Goodwill ending balance |
7,965.4
|
7,671.0
|
| Belgium |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill beginning balance |
2,576.3
|
2,681.7
|
| Acquisitions and related adjustments |
48.7
|
24.9
|
| Foreign currency translation adjustments |
(48.9)
|
(130.3)
|
| Goodwill ending balance |
2,576.1
|
2,576.3
|
| Switzerland |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill beginning balance |
2,903.9
|
2,931.3
|
| Acquisitions and related adjustments |
0.0
|
(0.3)
|
| Foreign currency translation adjustments |
49.3
|
(27.1)
|
| Goodwill ending balance |
2,953.2
|
2,903.9
|
| Central and Eastern Europe |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill beginning balance |
564.6
|
607.0
|
| Acquisitions and related adjustments |
0.0
|
0.0
|
| Foreign currency translation adjustments |
(7.2)
|
(42.4)
|
| Goodwill ending balance |
$ 557.4
|
$ 564.6
|