9. Goodwill


($ in millions)	Metal Beverage Packaging, Americas & Asia		Metal Beverage Packaging, Europe		Food & Aerosol Packaging		Aerospace		Corporate & Other		Total

Balance at December 31, 2015	$	739	$	817	$	612	$	9	$	—	$	2,177
Business acquisitions		—		—		—		31		3,767		3,798
Business dispositions		(31)		(783)		—		—		—		(814)
Effects of currency exchange rates		—		28		3		—		(9)		22
Balance at June 30, 2016	$	708	$	62	$	615	$	40	$	3,758	$	5,183

The increase in goodwill in the corporate and other segment is related to the acquisition of Rexam discussed in Note 4. The decrease of goodwill in business dispositions represents the sale of the Ball portion of the Divestment Business. As a result of the divestiture to Ardagh of certain Ball assets in Brazil and Europe, the company performed goodwill impairment tests of these reporting units before and after the divestment. No impairment was identified prior to, or after the divestiture.

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 industry 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 million at June 30, 2016.