Supplemental Cash Flow and Noncash Investing Transactions (Tables)

12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	2021		2020		2019
Supplemental Cash Flow Information (in millions)
Interest paid (1)	$	196.6	$	189.8	$	185.1
Income taxes paid, net	10.3		21.4		11.6