Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information Table

We paid the following in the respective periods:

	Six Months Ended June 30,
(millions)	2017		2016
Income taxes	$	494.2	$	275.4
Interest	73.3		70.1