Investments and Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Short-Term Investments

Short-term investments consisted of (in millions):

	December 31,
	2012		2011
Overnight investments, time deposits and Repurchase agreements	$	308	$	131
Corporate and bank notes		2,121		1,808
U. S. government agency mortgages		545		502
U.S. government agency notes				—
Commingled funds		435		1,274
Other		3		3
	$	3,412	$	3,718

Short-Term Investments By Contractual Maturity

Short-term investments at December 31, 2012, by contractual maturity included (in millions):

Due in one year or less	$	2,262
Due between one year and three years		605
Due after three years		545
	$	3,412