Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of financial assets and liabilities measured at fair value on a recurring basis

Fair Value Measurements

The following table presents the Company’s financial assets and liabilities measured at fair value on a recurring basis:

			December 31,
($ amounts in millions)	Balance sheet location	Classification	2018		2017
Asset Category
Foreign exchange and metals contracts not designated as hedging instruments	Other current assets	Level 2	$	0.9	$	2.0
Interest rate swaps designated as cash flow hedging instruments	Other current assets	Level 2	6.5		—
Interest rate swaps designated as cash flow hedging instruments	Other assets	Level 2	2.6		3.4
Available for sale equity securities	Other assets	Level 1	0.3		2.4
Available for sale equity securities	Other assets	Level 2	—		0.6
Total			$	10.3	$	8.4
Liability Category
Interest rate swaps designated as cash flow hedging instruments	Accrued expenses and other liabilities	Level 2	$	0.6	$	2.8
Foreign exchange and metals contracts not designated as hedging instruments	Accrued expenses and other liabilities	Level 2	1.2		1.4
Interest rate swaps designated as cash flow hedging instruments	Other liabilities	Level 2	0.3		0.8
Long-term contingent consideration	Contingent consideration	Level 3	57.4		79.2
Total			$	59.5	$	84.2