Rendering

Component: (Network and Table)
Network
2417410 - Disclosure - Employee Benefit Plans (Schedule of Estimated Future Employer Contributions) (Details)
(http://www.comerica.com/role/EmployeeBenefitPlansScheduleOfEstimatedFutureEmployerContributionsDetails)
TableStatement [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000028412 (http://www.sec.gov/CIK)
Statement [Line Items]Period [Axis]
2016-12-31
Defined Benefit Plans and Other Postretirement Benefit Plans [Axis]
Qualified PlanNon-Qualified PlanPostretirement Benefit Plan
2017
120,000,000  
11,000,000  
6,000,000 1
2018
119,000,000  
12,000,000  
6,000,000 1
2019
124,000,000  
12,000,000  
6,000,000 1
2020
126,000,000  
13,000,000  
5,000,000 1
2021
129,000,000  
13,000,000  
5,000,000 1
2022 - 2026
657,000,000  
65,000,000  
21,000,000 1
1: Estimated benefit payments in the postretirement benefit plan are net of estimated Medicare subsidies.