Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2018

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information Table

We paid the following in the respective periods:

	Six Months Ended June 30,
(millions)	2018		2017
Income taxes	$	358.9	$	452.9
Interest	70.9		73.3