Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2018

Related Party Transactions [Abstract]

Summary of Amounts Due to and Due from Related Party

Amounts due to and due from related parties as of September 30, 2018 and December 31, 2017 are summarized in the below table:

	As of
Related party (Dollars in millions)	September 30, 2018		December 31, 2017
Related party receivables	$	12.9	$	—
Related party payables		60.6		—