CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 139	$ 127	$ 432	$ 329
Other comprehensive income (loss):
Fair market value adjustment on cash flow hedges, net of income taxes of $1 million, $21 million, $8 million and $31 million	(2)	(32)	(12)	(47)
Reclassification adjustment for net realized losses on cash flow hedges included in interest expense, net of income taxes of $7 million, $5 million, $16 million and $16 million	10	8	24	24
Foreign currency translation	4	(8)	5	(6)
Total other comprehensive income (loss)	12	(32)	17	(29)
Comprehensive income	$ 151	$ 95	$ 449	$ 300