Significant Accounting Policies - Additional disclosures (Details) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Liability balance, beginning of year |
$ 1.5
|
$ 0.5
|
$ 0.1
|
$ 0.1
|
| Integration costs |
1.0
|
|
1.3
|
|
| Restructuring and integration costs |
4.8
|
|
6.6
|
0.7
|
| Settlement of liabilities |
(4.4)
|
(0.2)
|
(4.8)
|
(0.5)
|
| Liability balance, end of year |
1.9
|
0.3
|
1.9
|
0.3
|
| Accrued expenses |
|
|
|
|
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Liability balance, end of year |
1.9
|
$ 0.3
|
1.9
|
0.3
|
| USAA AMCO |
|
|
|
|
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Integration costs |
4.8
|
|
|
|
| Severance expense |
|
|
|
|
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Severance expense |
|
|
|
$ 0.7
|
| Severance expense | USAA AMCO |
|
|
|
|
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Severance expense |
3.7
|
|
5.2
|
|
| Contract termination expense |
|
|
|
|
| Rollforward of restructuring and integration liabilities |
|
|
|
|
| Severance expense |
$ 0.1
|
|
$ 0.1
|
|