SHAREHOLDERS' EQUITY - Changes in Accumulated Other Comprehensive Income (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of period	$ 2,715	[1]
Other comprehensive income loss before reclassifications net of tax	(1,026)	[1]
Amounts reclassified from accumulated other comprehensive income net of tax	(38)	[1]
Other comprehensive income (loss), net of tax	(1,064)	[1]	35
Balance, end of period	1,651	[1]
Unrealized foreign currency translation gains (losses)
Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of period	333	[1]
Other comprehensive income loss before reclassifications net of tax	(467)	[1]
Amounts reclassified from accumulated other comprehensive income net of tax	(7)	[1]
Other comprehensive income (loss), net of tax	(474)	[1]
Balance, end of period	(141)	[1]
Unrealized gains (losses) on investment securities
Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of period	2,570	[1]
Other comprehensive income loss before reclassifications net of tax	(554)	[1]
Amounts reclassified from accumulated other comprehensive income net of tax	(35)	[1]
Other comprehensive income (loss), net of tax	(589)	[1]
Balance, end of period	1,981	[1]
Unrealized gains (losses) on derivatives
Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of period	(5)	[1]
Other comprehensive income loss before reclassifications net of tax	(5)	[1]
Amounts reclassified from accumulated other comprehensive income net of tax	1	[1]
Other comprehensive income (loss), net of tax	(4)	[1]
Balance, end of period	(9)	[1]
Pension liability adjustment
Accumulated Other Comprehensive Income [Roll Forward]
Balance, beginning of period	(183)	[1]
Other comprehensive income loss before reclassifications net of tax	0	[1]
Amounts reclassified from accumulated other comprehensive income net of tax	3	[1]
Other comprehensive income (loss), net of tax	3	[1]
Balance, end of period	$ (180)	[1]

[1] All amounts are net of tax. Amounts in parentheses indicate debits.