VIE (Classifications of Consolidated VIE Assets, Liabilities and Noncontrolling Interest Included in the Bancorp's Consolidated Balance Sheets) (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets
Other short-term investments	$ 1,950	$ 1,825
Indirect secured consumer loans	11,538	8,976
ALLL	(1,202)	(1,103)	$ (1,196)	$ (1,253)
Other assets	9,190	7,372
Total Assets	169,369	146,069
Liabilities
Other liabilities	2,422	2,498
Long-term debt	14,970	14,426
Total liabilities	148,166	129,819
Variable Interest Entity, Primary Beneficiary
Assets
Other short-term investments	74	40
ALLL	(7)	(4)
Other assets	8	5
Liabilities
Other liabilities	2	1
Long-term debt	1,253	606
Variable Interest Entity, Primary Beneficiary | Indirect secured consumer loans
Assets
Other short-term investments	74	40
Indirect secured consumer loans	1,354	668
ALLL	(7)	(4)
Other assets	8	5
Total Assets	1,429	709
Liabilities
Other liabilities	2	1
Long-term debt	1,253	606
Total liabilities	$ 1,255	$ 607