XML 38 R25.htm IDEA: XBRL DOCUMENT

SHORT-TERM INVESTMENTS: (Tables)

6 Months Ended

Jun. 30, 2019

Schedule of short-term investments

Short-term investments were as follows ($ in millions):


		At June 30,			At December 31,
		2019			2018
Trading securities		$	118.0		$	213.1
Weighted average interest rate			2.4	%		2.2	%

Available-for-sale		$	0.8		$	0.7
Weighted average interest rate			0.7	%		0.7	%
Total		$	118.8		$	213.8

Summary of activity investments

The following table summarizes the activity of these investments by category (in millions):


		Three months ended						Six months ended
		June 30,						June 30,
		2019			2018			2019			2018
Trading:
Interest earned		$	(*)		$	0.1		$	0.1		$	0.1
Unrealized gain (loss) at the end of the period		$	(*)		$	(0.1)		$	(*)		$	(0.2)

Available-for-sale:
Interest earned			(*)			(*)			(*)			(*)
Investment redeemed		$	—		$	0.1		$	—		$	0.2

(*) Less than $0.1 million.