Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities (Tables)

12 Months Ended

Dec. 31, 2023

Supplemental Cash Flow Elements [Abstract]

Summary of Cash Paid for Interest and Income Taxes

The Company’s cash paid during the period for interest and income taxes are summarized as follows:

	Year Ended December 31,
(in millions)	2023		2022		2021
Cash paid during the period for:
Interest	$	185.8	$	120.1	$	61.5
Income taxes, net of refunds	$	218.1	$	122.3	$	146.9

Summary of Significant Non-Cash Investing and Financing Activities

The Company’s significant non-cash investing and financing activities are summarized as follows:

	Year Ended December 31,
(in millions)	2023		2022		2021
Other payables issued for agency acquisitions and purchased customer accounts	$	12.2	$	5.6	$	15.1
Estimated acquisition earn-out payables and related charges	$	67.2	$	73.3	$	75.7
Assumed acquisition earn-out payables	$	21.1	$	34.8	$	—
Contingent payable issued for agency acquisition	$	—	$	—	$	24.1
Common stock issued for agency acquisition	$	18.3	$	14.7	$	9.9
Notes payable assumed for agency acquisition	$	—	$	1.8	$	1.4
Notes received on the sale of businesses, fixed assets and customer accounts	$	0.1	$	—	$	—

Schedule of Reconciliation of Fiduciary Cash

The following is a reconciliation of fiduciary cash as of December 31, 2023, 2022 and 2021.

	Balance as of December 31,
(in millions)	2023		2022		2021
Table to reconcile restricted and non-restricted fiduciary cash
Restricted fiduciary cash	$	1,411.8	$	1,231.9	$	583.2
Non-restricted fiduciary cash	$	190.8	$	151.3	$	193.8
Total restricted and non-restricted fiduciary cash at the end of the period	$	1,602.6	$	1,383.2	$	777.0

The Company's fiduciary cash increased as of December 31, 2022 compared to December 31, 2021 primarily due to businesses acquired during 2022.

	Balance as of December 31,
(in millions)	2023		2022		2021
Table to reconcile cash and cash equivalents inclusive of fiduciary cash
Cash and cash equivalents	$	700.3	$	650.0	$	693.2
Fiduciary cash	$	1,602.6	$	1,383.2	$	777.0
Total cash and cash equivalents inclusive of fiduciary cash at the end of the period	$	2,302.9	$	2,033.2	$	1,470.2