CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 1,149	$ 1,085	$ 418
Other comprehensive income:
Foreign currency translation adjustment	46	(61)	11
Unrealized gains on investments, net of deferred income taxes of $0 million, $1 million, and $1 million for the years ended December 31, 2012, 2011, and 2010, respectively	0	2	0
Other comprehensive income (loss)	46	(59)	11
Comprehensive Income	1,195	1,026	429
Deferred income taxes on gross unrealized appreciation (depreciation) on investments	$ 0	$ 1	$ 1