Leases (Weighted-Average Remaining Lease Term and Discount Rate) (Details)	Mar. 31, 2020
Leases [Abstract]
Weighted-average remaining lease term (in years)	15 years 4 months 24 days	[1]
Weighted-average discount rate (percent)	2.20%	[2]

[1] Calculated on the basis of the remaining lease term and the lease liability balance for each lease as of the reporting date.

[2] Calculated on the basis of the discount rate used to calculate the lease liability for each lease as of the reporting date and the remaining balance of the lease payments for each lease as of the reporting date.