Fair value of financial instruments Fair value of financial instruments (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The fair value and carrying value of our fixed-rate debt are as follows:

(In millions)	September 30, 2017		December 31, 2016
Unsecured notes issued in a private placement(a)
Carrying value	$	—	85.7
Fair value	—		88.2

(a) Prepaid in September 2017.