Summarizes the Bancorp's Recorded Investment in Portfolio Loans and Leases by Age and Class (Detail) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010		Sep. 30, 2010
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	$ 77,316	[1]	$ 75,221	[2]
30-89 Days Past Due	514	[1]	791	[2]
90 Days and Greater	1,324	[1],[3]	1,433	[2],[3]
Total Past Due	1,838	[1]	2,224	[2]
Total Loans and Leases	79,154	[1]	77,445	[2],[4]
90-Days past Due and Still Accruing	274	[1]	274	[2]	317
Commercial Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases	44,169	[5]	43,462	[4]
Commercial Portfolio Segment | Commercial And Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	28,949		26,687
30-89 Days Past Due	57		201
90 Days and Greater	252	[3]	303	[3]
Total Past Due	309		504
Total Loans and Leases	29,258		27,191
90-Days past Due and Still Accruing	9		16
Commercial Portfolio Segment | Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	5,291		5,151
30-89 Days Past Due	35		50
90 Days and Greater	120	[3]	139	[3]
Total Past Due	155		189
Total Loans and Leases	5,446		5,340
90-Days past Due and Still Accruing	2		8
Commercial Portfolio Segment | Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	4,629		5,252
30-89 Days Past Due	73		38
90 Days and Greater	182	[3]	215	[3]
Total Past Due	255		253
Total Loans and Leases	4,884		5,505
90-Days past Due and Still Accruing	7		3
Commercial Portfolio Segment | Commercial Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	1,024		1,831
30-89 Days Past Due	11		72
90 Days and Greater	178	[3]	145	[3]
Total Past Due	189		217
Total Loans and Leases	1,213		2,048
90-Days past Due and Still Accruing	44		3
Commercial Portfolio Segment | Commercial Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	3,355		3,361
30-89 Days Past Due	3		10
90 Days and Greater	10	[3]	7	[3]
Total Past Due	13		17
Total Loans and Leases	3,368		3,378
90-Days past Due and Still Accruing	1
Residential Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	9,721	[2],[6]	8,404	[2],[6]
30-89 Days Past Due	107	[2],[6]	138	[2],[6]
90 Days and Greater	359	[2],[3],[6]	368	[3]
Total Past Due	466	[2],[6]	506	[2],[6]
Total Loans and Leases	10,187	[2],[6]	8,910	[2],[6]
90-Days past Due and Still Accruing	91	[2],[6]	100	[2],[6]
Consumer Portfolio Segment
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases	24,798	[5]	25,073	[4]
Consumer Portfolio Segment | Home Equity
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	10,651		11,220
30-89 Days Past Due	128		148
90 Days and Greater	141	[3]	145	[3]
Total Past Due	269		293
Total Loans and Leases	10,920		11,513
90-Days past Due and Still Accruing	83		89
Consumer Portfolio Segment | Automobile Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	11,514		10,872
30-89 Days Past Due	67		96
90 Days and Greater	12	[3]	15	[3]
Total Past Due	79		111
Total Loans and Leases	11,593		10,983
90-Days past Due and Still Accruing	9		13
Consumer Portfolio Segment | Credit Card
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	1,777		1,771
30-89 Days Past Due	32		35
90 Days and Greater	69	[3]	90	[3]
Total Past Due	101		125
Total Loans and Leases	1,878		1,896
90-Days past Due and Still Accruing	28		42
Consumer Portfolio Segment | Consumer Other Financing Receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans and Leases	405		672
30-89 Days Past Due	1		3
90 Days and Greater	1	[3]	6	[3]
Total Past Due	2		9
Total Loans and Leases	407		681
Commercial And Industrial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases			27,191
Commercial Mortgage Loans Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases			5,340
Commercial Mortgage Loans Non Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases			5,505
Commercial Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases			2,048
Commercial Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans and Leases			$ 3,378

[1] Excludes $62 of loans measured at fair value.

[2] Excludes $46 of loans measured at fair value.

[3] Includes accrual and nonaccrual loans and leases.

[4] Excludes $46 of residential mortgage loans measured at fair value, and includes $1,039 of leveraged leases, net of unearned income.

[5] Excludes $62 of residential mortgage loans measured at fair value, and includes $1,018 of leveraged leases, net of unearned income.

[6] Information for current residential mortgage loans includes advances made pursuant to servicing agreements for GNMA mortgage pools whose repayments are insured by the Federal Housing Administration or guaranteed by the Department of Veterans Affairs. As of December 31, 2010, $55 of these loans were 30-89 days past due and $284 were 90 days or more past due.