Supplemental Cash Flow and Noncash Investing Transactions (Tables)

12 Months Ended

Dec. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	2019		2018		2017
Supplemental Cash Flow Information (in millions)
Interest paid (1)	$	185.1	$	164.0	$	154.6
Income taxes paid, net	11.6		18.1		21.5