Consolidated Statements of Changes in Stockholders' Equity (USD $) In Millions, except Share data	Total		Class B Common Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Beginning balance at Dec. 31, 2013	$ 865				$ 608	$ 402		$ (145)
Beginning balance, shares at Dec. 31, 2013	131,537,798		12,799,999	131,537,798				(2,120,709)
Net income	68					68
Currency translation adjustments	1	[1]					1
Issuance of common stock related to exercises of options and vesting of RSUs	2				2
Issuance of common stock related to exercise of options and vesting of RSUs, shares				434,215
Tax benefits on equity awards	11				11
Minimum withholding taxes on net share settlements of equity awards	(18)				(18)
Stock based compensation	15				15
Ending balance at Mar. 31, 2014	$ 944				$ 618	$ 470	$ 1	$ (145)
Ending balance, shares at Mar. 31, 2014	131,972,013		12,799,999	131,972,013				(2,120,709)

[1] Unrealized gains (losses) and reclassifications of net gains (losses), including related tax effects, on available for sale securities during the three months ended March 31, 2014 and 2013 were not material.