Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information Table

We paid the following in the respective periods:

	Nine Months Ended September 30,
(millions)	2017		2016
Income taxes	$	538.7	$	380.8
Interest	107.4		98.0