Leases (Supplemental Cash Flow And Balance Sheet Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating cash flows from operating leases (payments)	$ 112,671
Right-of-use assets obtained in exchange for operating lease liabilities	236,714
Lease right-of-use assets	526,417	$ 369,333	$ 0
Current lease liabilities	92,714	86,747	0
Noncurrent lease liabilities	477,004	$ 331,520	$ 0
Operating Lease, Liability	$ 569,718
Operating lease, weighted average remaining lease term	10 years 6 months
Operating lease, weighted average discount rate	4.30%