Stock-Based Compensation (Number of Shares to be issued upon Exercise of Outstanding Stock-Based Awards and Remaining Shares Available for Future Issuance under all Equity Compensation Plans) (Detail) shares in Thousands	Dec. 31, 2018 shares
Employee Stock Ownership Plan (ESOP) Disclosures
Number of Shares to be Issued Upon Exercise	8,888
Shares Available for Future Issuance	18,471
Equity compensation plans
Employee Stock Ownership Plan (ESOP) Disclosures
Shares Available for Future Issuance	13,290	[1]
Restricted Stock Awards
Employee Stock Ownership Plan (ESOP) Disclosures
Number of Shares to be Issued Upon Exercise	868
Restricted Stock Units
Employee Stock Ownership Plan (ESOP) Disclosures
Number of Shares to be Issued Upon Exercise	8,020
Employee stock purchase plan
Employee Stock Ownership Plan (ESOP) Disclosures
Shares Available for Future Issuance	5,181	[2]

[1] Under the 2017 Incentive Compensation Plan, 17.5 million shares were authorized for issuance as SARs, RSAs, RSUs, stock options, performance share or unit awards, dividend or dividend equivalent rights and stock awards .

[2] Represents remaining shares of Fifth Third common stock under the Bancorp’s 1993 Stock Purchase Plan, as amended and restated, including an additional 1.5 million shares approved by shareholders on March 28, 2007 and an additiona l 12 million shares approved by shareholders on April 21, 2009 .