Divestitures and Investment Activities - Schedule of Assets and Liabilities Held for Sale (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	$ 64.0		$ 43.0
Total assets	814.9	$ 1,452.9
Total liabilities	550.5	821.9
Business Solutions | Asset Held for Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents	64.0	37.7
Settlement assets	230.3	566.0
Property and equipment, net of accumulated depreciation of $1.7 and $19.3	1.7	6.3
Goodwill	229.2	532.0
Other intangible assets, net of accumulated amortization of $77.8 and $360.2	9.7	50.4
Other assets	280.0	260.5
Total assets	814.9	1,452.9
Accounts payable and accrued liabilities	81.3	61.6
Settlement obligations	230.3	566.0
Other liabilities	238.9	194.3
Total liabilities	$ 550.5	$ 821.9