Summary of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Depreciation and Amortization Policies for Property and Equipment

Our depreciation and amortization policies are as follows:

Buildings	Lesser of lease term or 35 years
Leasehold improvements	Lesser of lease term or useful life
Furniture and fixtures	5 to 15 years
Equipment, general office and computer	3 to 5 years
Software developed for internal use	3 to 5 years

Property and equipment, net consists of the following (in thousands):

	December 31,
	2019		2018
Buildings and leasehold improvements	$	163,881	$	156,357
Furniture, fixtures and equipment	38,878		38,049
Computer equipment	397,454		349,454
Software developed for internal use	1,857,353		1,771,306
Property and equipment	2,457,566		2,315,166
Accumulated depreciation and amortization	(1,815,844)		(1,524,794)
Property and equipment, net	$	641,722	$	790,372