Leased Assets and Liabilities (Weighted-Average) (Details)	Dec. 31, 2019	Dec. 31, 2018
Weighted-average remaining lease term
Operating leases	7 years 8 months 12 days	7 years 2 months 12 days
Finance leases	3 years 10 months 24 days	4 years 1 month 6 days
Weighted-average discount rate
Operating leases	6.10%	4.50%
Finance leases	6.80%	6.20%