XML 35 R2.htm IDEA: XBRL DOCUMENT v3.22.1
Audit Information
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Auditor [Abstract]    
Auditor Name Ernst & Young LLP Deloitte & Touche LLP
Auditor Location Grand Rapids, Michigan San Francisco, California
Auditor Firm ID 42 34