The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Goodwill and Other Intangibles - Narratives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Finite-Lived Intangible Assets, Net
Goodwill	$ 899,596		$ 901,529
Increase (decrease) in value of balance sheet item due to foreign currency translation	(9,152)	$ (13,902)
Amortization of intangible assets	52,700	$ 54,000
Real Estate
Finite-Lived Intangible Assets, Net
Foreign currency translation adjustments	(1,900)
Goodwill	870,300		$ 872,200
Investment Management
Finite-Lived Intangible Assets, Net
Goodwill	29,300
Net intangible assets
Finite-Lived Intangible Assets, Net
Increase (decrease) in value of balance sheet item due to foreign currency translation	$ (13,000)
Minimum
Finite-Lived Intangible Assets, Net
Finite lived intangible assets useful life (in years)	1 year
Maximum
Finite-Lived Intangible Assets, Net
Finite lived intangible assets useful life (in years)	48 years