Goodwill - Schedule of Goodwill by Reportable Segments (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 2,571.6	$ 2,589.3
Acquisitions	52.6	(10.4)
Foreign currency translation and other	(13.4)	(7.3)
Impairments	(7.8)	0.0	$ 0.0
Goodwill, ending balance	2,603.0	2,571.6	2,589.3
Accumulated impairment losses	1,413.7	1,405.9	1,405.9
Corporate and Other
Goodwill [Roll Forward]
Goodwill, beginning balance	0.0	0.0
Acquisitions	0.0	0.0
Foreign currency translation and other	7.8	0.0
Impairments	(7.8)
Goodwill, ending balance	0.0	0.0	0.0
Global Lifestyle | Operating Segments
Goodwill [Roll Forward]
Goodwill, beginning balance	2,192.1	2,209.8
Acquisitions	15.2	(10.4)
Foreign currency translation and other	(13.4)	(7.3)
Impairments	0.0
Goodwill, ending balance	2,193.9	2,192.1	2,209.8
Global Housing | Operating Segments
Goodwill [Roll Forward]
Goodwill, beginning balance	379.5	379.5
Acquisitions	37.4	0.0
Foreign currency translation and other	(7.8)	0.0
Impairments	0.0
Goodwill, ending balance	409.1	379.5	$ 379.5
Connected Living | Global Lifestyle
Goodwill [Roll Forward]
Goodwill, beginning balance	698.7
Goodwill, ending balance	689.1	698.7
Global Automotive | Global Lifestyle
Goodwill [Roll Forward]
Goodwill, beginning balance	1,420.5
Goodwill, ending balance	1,432.9	1,420.5
Global Financial Services and Other | Global Lifestyle
Goodwill [Roll Forward]
Goodwill, beginning balance	72.9
Goodwill, ending balance	$ 71.9	$ 72.9