Revenue - Schedule of Activity of Contract Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	$ 28.1	$ 29.2
Capitalized contract cost, Additions	3.8	4.0
Capitalized contract cost, Amortization	(5.0)	(5.1)
Capitalized contract cost, net, ending Balance	26.9	28.1
Fulfillment Costs [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	10.8	12.1
Capitalized contract cost, Additions	1.3	1.4
Capitalized contract cost, Amortization	(2.6)	(2.7)
Capitalized contract cost, net, ending Balance	9.5	10.8
Cost of Acquisition [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	17.3	17.1
Capitalized contract cost, Additions	2.5	2.6
Capitalized contract cost, Amortization	(2.4)	(2.4)
Capitalized contract cost, net, ending Balance	17.4	17.3
Entertainment and Communications [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	21.9	22.8
Capitalized contract cost, Additions	3.1	3.2
Capitalized contract cost, Amortization	(4.0)	(4.1)
Capitalized contract cost, net, ending Balance	21.0	21.9
Entertainment and Communications [Member] | Fulfillment Costs [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	6.8	8.0
Capitalized contract cost, Additions	0.9	0.9
Capitalized contract cost, Amortization	(2.0)	(2.1)
Capitalized contract cost, net, ending Balance	5.7	6.8
Entertainment and Communications [Member] | Cost of Acquisition [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	15.1	14.8
Capitalized contract cost, Additions	2.2	2.3
Capitalized contract cost, Amortization	(2.0)	(2.0)
Capitalized contract cost, net, ending Balance	15.3	15.1
IT Services and Hardware [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	6.2	6.4
Capitalized contract cost, Additions	0.7	0.8
Capitalized contract cost, Amortization	(1.0)	(1.0)
Capitalized contract cost, net, ending Balance	5.9	6.2
IT Services and Hardware [Member] | Fulfillment Costs [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	4.0	4.1
Capitalized contract cost, Additions	0.4	0.5
Capitalized contract cost, Amortization	(0.6)	(0.6)
Capitalized contract cost, net, ending Balance	3.8	4.0
IT Services and Hardware [Member] | Cost of Acquisition [Member]
Contract Asset [Roll Forward]
Capitalized contract cost, net, beginning balance	2.2	2.3
Capitalized contract cost, Additions	0.3	0.3
Capitalized contract cost, Amortization	(0.4)	(0.4)
Capitalized contract cost, net, ending Balance	$ 2.1	$ 2.2