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Investments (Textuals) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Investments (Textuals) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Related Party Transaction [Line Items]
Realized gain (losses) from sale of securities			$ 0.0
Cash surrender value of insurance contracts		$ 3.7	15.2
Interest Rate Derivative Assets, at Fair Value		0.0
Accounts Receivable, Related Parties		4.8
Accounts Payable, Related Parties		35.9
Equity in earnings (loss) of unconsolidated subsidiaries, net		0.7	1.0	$ (13.2)
Gain (Loss) on Disposition of Assets		(11.5)	(7.6)	6.7
Proceeds from Life Insurance Policy		15.6	0.0	0.0
Miscellaneous, net		6.8	$ (3.6)	(4.0)
CompanyOwnedLifeInsuranceContract
Related Party Transaction [Line Items]
Miscellaneous, net		$ 7.2
Inspur (Suzhou) Financial Technology Service Co Ltd [Member]
Related Party Transaction [Line Items]
Strategic Alliance, Ownership Percentage		48.10%	40.00%
Aisino-Wincor Retail And Banking Systems (Shanghai) Co.,Ltd [Member]
Related Party Transaction [Line Items]
Strategic Alliance, Ownership Percentage		43.60%
Kony Inc [Member]
Related Party Transaction [Line Items]
Proceeds from Divestiture of Businesses	$ 21.3
Gain (Loss) on Disposition of Assets	7.3
Aisino JV [Domain]
Related Party Transaction [Line Items]
Equity in earnings (loss) of unconsolidated subsidiaries, net				$ 19.2
Kony, Inc. [Member]
Related Party Transaction [Line Items]
Cost Method Investments	$ 14.0