Leases - 842 Guidance (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Term of contracts	15 years
Operating lease cost	$ 159,913
Short-term lease cost	14,412
Variable lease cost	39,134
Sublease income	(5,119)
Total operating lease costs	208,340
Operating lease not yet commenced	13,700
Future sublease income	211,000
Letter Of Credit Real Estate Leases	$ 7,400
Minimum
Lessee, Lease, Description [Line Items]
Term of operating lease not yet commenced	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of operating lease not yet commenced	7 years
Real Estate Arrangements
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 63,893
Short-term lease cost	111
Variable lease cost	15,610
Sublease income	(5,119)
Total operating lease costs	$ 74,495
Weighted average remaining lease term (in years)	12 years 9 months 18 days
Weighted average discount rate	3.50%
2020	$ 77,961
2021	79,303
2022	75,657
2023	74,244
2024	67,727
Thereafter	532,549
Total lease payments	907,441
Less: imputed interest	186,457
Total lease liabilities	720,984
Co-location Arrangements
Lessee, Lease, Description [Line Items]
Operating lease cost	96,020
Short-term lease cost	14,301
Variable lease cost	23,524
Sublease income	0
Total operating lease costs	$ 133,845
Weighted average remaining lease term (in years)	3 years 10 months 24 days
Weighted average discount rate	2.20%
2020	$ 63,514
2021	17,550
2022	9,603
2023	6,189
2024	4,795
Thereafter	14,695
Total lease payments	116,346
Less: imputed interest	5,686
Total lease liabilities	$ 110,660