Goodwill

The changes in the carrying amount of goodwill during the nine months ended September 30, 2011 are as follows (in millions):



	Communications Segment			Coal Mining Segment		Total
Balance at December 31, 2010	$	1,427	—	$	—	$	1,427
Effect of foreign currency rate change	1		—	—		1
Balance at September 30, 2011	$	1,428		$	—	$	1,428

Effective January 1, 2011, the Company adopted new accounting guidance that requires entities with goodwill assigned to reporting units with negative carrying value to perform an allocated fair value test of goodwill impairment if certain qualitative factors indicate that such goodwill could be impaired. Based on its qualitative assessment as of January 1, 2011, the Company determined the test was not required. Furthermore, there were no events or changes in circumstances during the first nine months of 2011 that indicated the carrying value of goodwill may not be recoverable.