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Commitments (Tables)
12 Months Ended
Dec. 31, 2017
Commitments [Abstract]  
Schedule Of Operating Leases
Future minimum lease payments under operating lease commitments are as follows:
(In millions)
 
December 31,
 
2018
$
76.1

2019
64.5

2020
42.0

2021
28.3

2022
19.6

Thereafter
51.2

 
$
281.7