Goodwill and Other Intangibles - Summary of Intangible Assets (Details) - USD ($)
$ in Millions |
Sep. 30, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
$ 1,546.1
|
$ 1,571.4
|
$ 1,689.7
|
| Accumulated Amortization |
(526.9)
|
(423.9)
|
(417.5)
|
| Net |
1,019.2
|
1,147.5
|
1,272.2
|
| Indefinite-lived trademarks |
292.5
|
294.1
|
292.0
|
| Intangible assets, gross |
1,838.6
|
1,865.5
|
1,981.7
|
| Intangible assets, net |
1,311.7
|
1,441.6
|
1,564.2
|
| Customer relationships |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
1,095.6
|
1,099.2
|
1,102.0
|
| Accumulated Amortization |
(334.2)
|
(268.2)
|
(180.4)
|
| Net |
761.4
|
831.0
|
921.6
|
| Developed technology |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
321.0
|
328.2
|
|
| Accumulated Amortization |
(130.9)
|
(105.4)
|
|
| Net |
190.1
|
222.8
|
|
| Capitalized software |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
92.9
|
103.3
|
|
| Accumulated Amortization |
(45.8)
|
(35.8)
|
|
| Net |
47.1
|
67.5
|
|
| Trademarks |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
36.6
|
38.6
|
38.6
|
| Accumulated Amortization |
(16.0)
|
(12.4)
|
(7.7)
|
| Net |
$ 20.6
|
26.2
|
30.9
|
| Favorable operating leases |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Gross |
|
2.1
|
2.1
|
| Accumulated Amortization |
|
(2.1)
|
(1.8)
|
| Net |
|
$ 0.0
|
$ 0.3
|