v3.26.1
Significant Accounting Policies (Narrative) (Details) - shares
Jun. 30, 2026
Dec. 31, 2025
May 03, 2007
Significant Accounting Policies [Line Items]      
SIP expense - Year of grant     50.00%
SIP expense - Remaining vesting period     50.00%
SIP expense - Employees over 59 in year of grant     100.00%
Percent of shares canceled post employment     50.00%
Over 59 percent of shares eligible     100.00%
Maximum [Member]      
Significant Accounting Policies [Line Items]      
Intangible assets useful lives 5 years    
Leases, remaining terms 13 years    
Maximum [Member] | Internally Developed Software [Member]      
Significant Accounting Policies [Line Items]      
Intangible assets useful lives 3 years    
Maximum [Member] | Computer Equipment [Member]      
Significant Accounting Policies [Line Items]      
Property and equipment useful lives 5 years    
Maximum [Member] | Office Furniture And Equipment [Member]      
Significant Accounting Policies [Line Items]      
Property and equipment useful lives 7 years    
Minimum [Member]      
Significant Accounting Policies [Line Items]      
Intangible assets useful lives 3 years    
Leases, remaining terms 1 year    
Minimum [Member] | Computer Equipment [Member]      
Significant Accounting Policies [Line Items]      
Property and equipment useful lives 3 years    
Minimum [Member] | Office Furniture And Equipment [Member]      
Significant Accounting Policies [Line Items]      
Property and equipment useful lives 5 years    
Common Class A [Member]      
Significant Accounting Policies [Line Items]      
Common stock, shares authorized 4,000,000,000 4,000,000,000  
Common Class B [Member]      
Significant Accounting Policies [Line Items]      
Common stock, shares authorized 1,000 1,000