Equipment, Office Facilities, and Property (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of Equipment, Office Facilities, and Property

Estimated useful lives are as follows:

Equipment and office facilities	5 to 10 years
Buildings	20 to 40 years
Software	3 or 5 years (1)
Leasehold improvements	Lesser of useful life or lease term

⁽¹⁾ Amortized over contractual term if less than three years.

Equipment, office facilities, and property are detailed below:

December 31,	2017			2016
Software	$	1,490		$	1,335
Buildings	810			807
Leasehold improvements	357			342
Information technology equipment	326			299
Furniture and equipment	193			190
Land	167			168
Construction in progress	142			26
Telecommunications equipment	66			67
Total equipment, office facilities, and property	3,551			3,234
Accumulated depreciation and amortization	(2,080		)	(1,935		)
Total equipment, office facilities, and property — net	$	1,471		$	1,299