Fair Value Measurements Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

Financial instruments measured at fair value on a recurring basis as of December 31, 2014 are as follows (in millions):

	Level 1		Level 2		Level 3		Total
Assets at fair value:
Long-term investment in equity securities	$	379	$	—	$	—	$	379
U.S. Treasury securities	374		—		—		374
Mutual Funds	27		—		—		27
Total assets at fair value	$	780	$	—	$	—	$	780

Financial instruments measured at fair value on a recurring basis as of December 31, 2013 are as follows (in millions):

	Level 1		Level 2		Level 3		Total
Assets at fair value:
Long-term investment in equity securities	$	324	$	—	$	—	$	324
U.S. Treasury securities	100		—		—		100
Mutual Funds	33		—		—		33
Foreign exchange derivative contracts	—		4		—		4
Total assets at fair value	$	457	$	4	$	—	$	461