Basis of Presentation and Description of Business - Changes to Annual Results: Cash Flow Statement (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Feb. 07, 2019	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by (used in) operating activities	$ (65.4)	$ 503.7	$ 205.5	[1]	$ (70.5)	[1]
Net cash provided by (used in) investing activities	(5.3)	(1,078.7)	(133.8)	[1]	(6,156.7)	[1]
Net cash provided by (used in) financing activities	$ 96.9	$ 400.1	188.6	[1]	6,321.7	[1]
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by (used in) operating activities			195.6		(63.0)
Net cash provided by (used in) investing activities			(134.3)		(6,154.6)
Net cash provided by (used in) financing activities			189.3		6,321.8
Increase (Decrease)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net cash provided by (used in) operating activities			9.9		(7.5)
Net cash provided by (used in) investing activities			0.5		(2.1)
Net cash provided by (used in) financing activities			$ (0.7)		$ (0.1)

[1] See Note 1 Basis of Presentation and Description of Business for further detail regarding the elimination of the International lag reporting