Taxes on Income (Temporary Differences That Created Deferred Tax Assets and Liabilities) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Deferred tax assets:
Employee compensation, severance, and benefits	$ 213		$ 190
Facilities lease commitments	30		33
Reserves and allowances	25		30
State and local taxes	12		12
Net operating loss carryforwards	6		6
Total deferred tax assets	286		271
Valuation allowance	(4)		(4)
Deferred tax assets - net of valuation allowance	282		267
Deferred tax liabilities:
Depreciation and amortization	(125)		(142)
Net unrealized gain on securities available for sale	(98)		(5)
Capitalized internal-use software development costs	(76)		(62)
Deferred cancellation of debt income	(9)		(11)
Deferred loan costs	(7)		(10)
Deferred Senior Note exchange	(6)		(7)
Other			(2)
Total deferred tax liabilities	(321)		(239)
Deferred tax (liability) asset – net	$ (39)	[1]	$ 28	[1]

[1] Amounts are included in other assets and in accrued expenses and other liabilities at December 31, 2014 and 2013, respectively.