SUPPLEMENTAL CASH FLOW INFORMATION

12 Months Ended

Dec. 31, 2017

Supplemental Cash Flow Information [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

SUPPLEMENTAL CASH FLOW INFORMATION

Non-cash investing and financing activities and other supplemental cash flow information follows (in millions):

	2017		2016		2015
Accrued but unpaid additions to property and equipment at December 31	$	21.4	$	21.0	$	32.2
Cash interest payments in excess of interest capitalized	150.2		159.2		143.8
Income tax payments (refunds), net	30.0		38.1		37.5