Pension and Postretirement Benefits - Narrative (Details) - USD ($) $ in Millions	1 Months Ended			12 Months Ended
	Mar. 31, 2019	Feb. 07, 2019	Jan. 31, 2019	Dec. 31, 2021	Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items]
Pension settlement payments		$ 190.5		$ 0.0	$ 0.0	[1]	$ 105.9	[1]
Actuarial loss due to change in discount rate				95.0	173.0
Actuarial gain from updates to assumed cash balance conversion interest rates and cash balance interest crediting rate				6.0	12.0
Actuarial gain due to change in mortality assumptions				5.0	11.0
Underfunded of unfunded accumulated benefit obligations				166.6	275.8
Pension settlement charge		(85.8)		$ 0.0	$ (0.6)	[1]	0.0	[1]
Recognition period of short-term fluctuations in fair value for market-related valuation of assets				5 years
Target asset allocations (as a percent)				100.00%	100.00%
Maximum contributions per employee (as a percent)				50.00%
Employer matching contribution (as a percent)				50.00%
Employer matching contribution as a percent of employees' gross pay (as a percent)				7.00%
Net periodic benefit cost (credit)		1.2		$ 11.1	$ 10.6		$ 9.4
Bisnode
Defined Benefit Plan Disclosure [Line Items]
Pension liability				87.4
Plan assets				22.0
Executive
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation for former executives				6.5	6.9
Long-Term Pension and Postretirement Benefits | Executive
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation for former executives				$ 5.9	$ 6.3
Return-seeking assets
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				49.00%	56.00%
Return-seeking assets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				40.00%
Return-seeking assets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				60.00%
Return-seeking assets | Weighted Average
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				49.00%
Liability-hedging assets
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				51.00%	44.00%
Liability-hedging assets | Minimum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				40.00%
Liability-hedging assets | Maximum
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				60.00%
Liability-hedging assets | Weighted Average
Defined Benefit Plan Disclosure [Line Items]
Target asset allocations (as a percent)				51.00%
United States | Minimum
Defined Benefit Plan Disclosure [Line Items]
Amortization period				5 years
United States | Maximum
Defined Benefit Plan Disclosure [Line Items]
Amortization period				21 years
Foreign Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Amortization period				6 years
Foreign Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Amortization period				31 years
Qualified Plan | Minimum
Defined Benefit Plan Disclosure [Line Items]
Proportion of compensation allocated to retirement plans annually (as a percent)				3.00%
Qualified Plan | Maximum
Defined Benefit Plan Disclosure [Line Items]
Proportion of compensation allocated to retirement plans annually (as a percent)				12.50%
Qualified Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Weighted average expected long-term return on plan assets (as a percent)				6.00%	6.50%		7.00%
Employer contributions					$ 0.0
Expected future benefit payments in 2021				$ 0.0	0.0
Qualified Plan | United States | Defined Benefit Plan, Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Underfunded of unfunded accumulated benefit obligations				105.4	268.7
Qualified Plan | United States | Venture Capital Fund
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments				0.1	0.3
Qualified Plan | United States | Credit Fund
Defined Benefit Plan Disclosure [Line Items]
Unfunded commitments				17.2	19.9
Qualified Plan | Foreign Plan | Defined Benefit Plan, Unfunded Plan
Defined Benefit Plan Disclosure [Line Items]
Underfunded of unfunded accumulated benefit obligations				61.2	7.1
Qualified Plan | Foreign Plan | Defined Benefit Plan, Unfunded Plan | Bisnode
Defined Benefit Plan Disclosure [Line Items]
Increase in underfunded accumulated benefit obligations				54.1
Non-Qualified Plan
Defined Benefit Plan Disclosure [Line Items]
Pension settlement payments	$ 105.9		$ 190.5
Non-Qualified Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Pension settlement charge		$ 85.8			0.6
Pension plans
Defined Benefit Plan Disclosure [Line Items]
Aggregate actuarial losses and prior service credit				14.6	162.4
Actuarial loss				$ (85.3)	$ 168.9
Weighted average expected long-term return on plan assets (as a percent)		6.56%		5.70%	6.18%		6.70%
Employer contributions				$ 7.5	$ 5.3
Expected future benefit payments in 2021				96.0
Net periodic benefit cost (credit)		$ 0.5		(48.1)	(44.0)		$ (35.1)
Pension plans | Foreign Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions in 2021									$ 4.0
Postretirement benefit obligations
Defined Benefit Plan Disclosure [Line Items]
Aggregate actuarial losses and prior service credit				(2.1)	(2.4)
Actuarial loss				(0.1)	0.3
Employer contributions				0.2	0.7
Expected future benefit payments in 2021				0.2
Net periodic benefit cost (credit)		$ (0.2)		$ (0.4)	$ (0.4)		$ 0.1
Postretirement benefit obligations | Foreign Plan | Forecast
Defined Benefit Plan Disclosure [Line Items]
Expected employer contributions in 2021									$ 0.2

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