Accounts payable represents carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Other liabilities represents carrying amount as of the balance sheet date of liabilities not otherwise specified in the taxonomy. Also serves as the sum of liabilities not individually reported in the financial statements, or not separately disclosed in notes.

No definition available.

Parent Company (Details 1) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and cash equivalents	$ 22,288,000,000	$ 19,486,000,000	$ 22,250,000,000	$ 24,893,000,000
Investment securities	4,431,000,000us-gaap_AvailableForSaleSecurities	5,016,000,000us-gaap_AvailableForSaleSecurities	5,614,000,000us-gaap_AvailableForSaleSecurities
Accounts receivable, less reserves	44,386,000,000us-gaap_AccountsReceivableNet	43,777,000,000us-gaap_AccountsReceivableNet
Premises and equipment, less accumulated depreciation	3,938,000,000us-gaap_PropertyPlantAndEquipmentNet	3,875,000,000us-gaap_PropertyPlantAndEquipmentNet
Other assets	11,342,000,000us-gaap_OtherAssets	11,228,000,000us-gaap_OtherAssets
Total assets	159,103,000,000us-gaap_Assets	153,375,000,000us-gaap_Assets
Liabilities and Shareholders' Equity
Long-term debt	57,955,000,000us-gaap_LongTermDebt	55,330,000,000us-gaap_LongTermDebt
Total liabilities	138,430,000,000us-gaap_Liabilities	133,879,000,000us-gaap_Liabilities
Shareholders' Equity
Preferred shares	0us-gaap_PreferredStockValue	0us-gaap_PreferredStockValue
Common shares	205,000,000us-gaap_CommonStockValue	213,000,000us-gaap_CommonStockValue
Additional paid-in capital	12,874,000,000us-gaap_AdditionalPaidInCapital	12,202,000,000us-gaap_AdditionalPaidInCapital
Retained earnings	9,513,000,000	8,507,000,000
Accumulated other comprehensive loss	(1,919,000,000)	(1,426,000,000)
Total shareholders' equity	20,673,000,000us-gaap_StockholdersEquity	19,496,000,000us-gaap_StockholdersEquity	18,886,000,000us-gaap_StockholdersEquity	18,794,000,000us-gaap_StockholdersEquity	18,794,000,000us-gaap_StockholdersEquity
Total liabilities and shareholders' equity	159,103,000,000	153,375,000,000
Parent Company Details (Textuals) [Abstract]
Premises and equipment, accumulated depreciation	6,270,000,000	5,978,000,000
Parent Company [Member]
Assets
Cash and cash equivalents	8,824,000,000	6,076,000,000	4,797,000,000	6,914,000,000
Investment securities	1,000,000	123,000,000
Equity in net assets of subsidiaries and affiliates	20,123,000,000	19,571,000,000
Accounts receivable, less reserves	134,000,000	378,000,000
Premises and equipment, less accumulated depreciation	139,000,000	136,000,000
Loans to subsidiaries and affiliates	7,809,000,000	5,236,000,000
Due from subsidiaries and affiliates	1,477,000,000	1,126,000,000
Other assets	365,000,000	335,000,000
Total assets	38,872,000,000	32,981,000,000
Liabilities and Shareholders' Equity
Accounts payable and other liabilities	1,590,000,000	1,386,000,000
Due to subsidiaries and affiliates	964,000,000	926,000,000
Short-term debt of subsidiaries and affiliates	5,937,000,000	819,000,000
Long-term debt	9,708,000,000	10,354,000,000
Total liabilities	18,199,000,000	13,485,000,000
Shareholders' Equity
Preferred shares	0	0
Common shares	205,000,000	213,000,000
Additional paid-in capital	12,874,000,000	12,202,000,000
Retained earnings	9,513,000,000	8,507,000,000
Accumulated other comprehensive loss	(1,919,000,000)	(1,426,000,000)
Total shareholders' equity	20,673,000,000	19,496,000,000
Total liabilities and shareholders' equity	38,872,000,000	32,981,000,000
Parent Company Details (Textuals) [Abstract]
Premises and equipment, accumulated depreciation	$ 106,000,000	$ 76,000,000