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Basis of Presentation and Summary of Significant Accounting Policies Leases, Impact of New Accounting Standard Adoption (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases, Initial Application Period Cumulative Effect Transition [Line Items]
Prepaid expenses and other current assets	$ 198,967	$ 210,212
Intangible assets, net	5,649,464	5,906,690
Other assets	403,902	363,587
Accrued expenses and other current liabilities	625,967	584,151
Other liabilities	$ 392,250	$ 510,663

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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