Leases (Components Of Cash Flow Information Related To Leases) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from leases	$ 41,525
Leased asset obtained in exchange for new operating lease liabilities	$ 150,356
Weighted Average Remaining Lease Term, Operating leases	4 years 6 months 7 days
Weighted Average Discount Rate, Operating leases	3.30%