Consolidated Statement of Cash Flows (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities
Net income	$ 3,116	$ 2,759	$ 1,906
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	258	230	194
Share-based payments	63	0	35
Deferred income taxes	(119)	241	(175)
Other	67	52	17
Changes in operating assets and liabilities:
Accounts receivable	(42)	(121)	(162)
Income taxes receivable	153	(185)	0
Settlement due from customers	(194)	(500)	(114)
Prepaid expenses	(70)	(81)	27
Accrued litigation and legal settlements	160	(44)	467
Accounts payable	(20)	(2)	67
Settlement due to customers	322	348	74
Accrued expenses	315	221	296
Net change in other assets and liabilities	126	30	52
Net cash provided by operating activities	4,135	2,948	2,684
Investing Activities
Purchases of investment securities available-for-sale	(2,526)	(2,981)	(899)
Proceeds from sales of investment securities available-for-sale	1,488	390	485
Proceeds from maturities of investment securities available-for-sale	1,321	891	63
Purchases of property, plant and equipment	(155)	(96)	(77)
Capitalized software	(144)	(122)	(100)
Proceeds from maturities of investment securities held-to-maturity	36	0	300
Investment in nonmarketable equity investments	(20)	(118)	(74)
Decrease (increase) in restricted cash for litigation settlement	3	(726)	0
Acquisition of businesses, net of cash acquired	0	(70)	(460)
Other investing activities	(7)	(7)	14
Net cash used in investing activities	(4)	(2,839)	(748)
Financing Activities
Purchases of treasury stock	(2,443)	(1,748)	(1,148)
Dividends paid	(255)	(132)	(77)
Proceeds from debt	35	0	0
Cash proceeds from exercise of stock options	26	31	19
Tax benefit for share-based compensation	19	47	12
Other financing activities	(11)	4	(21)
Net cash used in financing activities	(2,629)	(1,798)	(1,215)
Effect of exchange rate changes on cash and cash equivalents	45	7	(54)
Net increase (decrease) in cash and cash equivalents	1,547	(1,682)	667
Cash and cash equivalents - beginning of period	2,052	3,734	3,067
Cash and cash equivalents - end of period	$ 3,599	$ 2,052	$ 3,734