Commitments and Guarantees (Analysis of Indemnification and Repurchase Liability for Asserted and Unasserted Claims) (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012
Total Repurchase and Indemnification Obligations [Member]
Loss Contingencies [Line Items]
Reserves, Beginning balance	$ 547,000,000	$ 672,000,000	$ 152,000,000	$ 130,000,000
Reserve adjustments, net	74,000,000	1,000,000	453,000,000	44,000,000
RBC Bank USA Acquisition				26,000,000
Losses - loan repurchases and settlements	(74,000,000)	(126,000,000)	(82,000,000)	(48,000,000)
Reserves, Ending balance	547,000,000	547,000,000	523,000,000	152,000,000
Residential Mortgages [Member]
Loss Contingencies [Line Items]
Repurchase obligations - sold loan portfolios	114,400,000,000		115,700,000,000
Residential Mortgages [Member] | Total Repurchase and Indemnification Obligations [Member]
Loss Contingencies [Line Items]
Reserves, Beginning balance	522,000,000	614,000,000	101,000,000	83,000,000
Reserve adjustments, net	73,000,000	4,000,000	438,000,000	32,000,000
RBC Bank USA Acquisition				26,000,000
Losses - loan repurchases and settlements	(72,000,000)	(96,000,000)	(77,000,000)	(40,000,000)
Reserves, Ending balance	523,000,000	522,000,000	462,000,000	101,000,000
Home Equity [Member]
Loss Contingencies [Line Items]
Repurchase obligations - sold loan portfolios	3,800,000,000		4,400,000,000
Home Equity [Member] | Total Repurchase and Indemnification Obligations [Member]
Loss Contingencies [Line Items]
Reserves, Beginning balance	25,000,000	58,000,000	51,000,000	47,000,000
Reserve adjustments, net	1,000,000	(3,000,000)	15,000,000	12,000,000
Losses - loan repurchases and settlements	(2,000,000)	(30,000,000)	(5,000,000)	(8,000,000)
Reserves, Ending balance	$ 24,000,000	$ 25,000,000	$ 61,000,000	$ 51,000,000