XML 19 R63.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Leases and Commitments Operating Lease Cost (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Operating Lease, Cost $ 162
Variable Lease, Cost 145
Lease, Cost $ 307