Leases - Lease Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
Operating Lease Payments
2020	$ 134,579
2021	134,707
2022	129,741
2023	126,435
2024	114,948
Thereafter	643,129
Total future minimum operating lease payments	1,283,539
Imputed interest	(374,490)
Total operating lease liabilities per the Consolidated Balance Sheet	909,049	$ 851,300
Sublease Cash Receipts
2020	39,941
2021	44,382
2022	45,582
2023	46,520
2024	40,643
Thereafter	143,547
Total future estimated sublease cash receipts	$ 360,615
UNITED STATES
Lessee, Lease, Description [Line Items]
Percentage of lease payments	82.00%

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.

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Amount of lease payments to be received by lessor for operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=119202524&loc=SL77919396-209981

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Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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