9. Goodwill

($ in millions)	Metal Beverage Packaging, Americas & Asia			Metal Beverage Packaging, Europe			Metal Food & Household Products Packaging			Aerospace & Technologies		Total

Balance at December 31, 2013	$	740.7		$	1,037.2		$	613.2		$	8.6	$	2,399.7
Business disposition	(1.2		)	—			—			—		(1.2		)
Effects of currency exchange rates	—			(123.3		)	(20.7		)	—		(144.0		)

Balance at December 31, 2014	739.5			913.9			592.5			8.6		2,254.5
Business acquisition	—			—			35.5			—		35.5
Effects of currency exchange rates	—			(97.3		)	(16.2		)	—		(113.5		)

Balance at December 31, 2015	$	739.5		$	816.6		$	611.8		$	8.6	$	2,176.5

The company’s annual goodwill impairment test completed in the fourth quarter of 2015 indicated the fair value of the metal beverage packaging, Asia (Beverage Asia) reporting unit exceeded its carrying amount by approximately 25 percent. The current supply of metal beverage packaging exceeds demand in China, resulting in pricing pressure and negative impacts on the profitability of our Beverage Asia reporting unit. If it becomes an expectation that this oversupply situation will continue for an extended period of time, the company may be required to record a noncash impairment charge for some or all of the goodwill associated with the Beverage Asia reporting unit, the total balance of which was $78.3 million at December 31, 2015.