Land, Buildings, Equipment and Software, Net (Tables)

12 Months Ended

Dec. 31, 2017

Land, Buildings, Equipment and Software, Net [Abstract]

Land, buildings and equipment, net

Land, buildings and equipment, net were as follows:

	Estimated Useful Lives	December 31,
(in millions except as noted)	(Years)	2018			2017
Land		$	2		$	3
Building and building equipment	25 to 50	7			17
Leasehold improvements	Varies	246			247
Office furniture and equipment	3 to 15	901			784
Other	4 to 20	2			1
Construction in progress		64			24
Subtotal		1,222			1,076
Accumulated depreciation		(894		)	(819		)
Land, Buildings and Equipment, Net		$	328		$	257

Land, Buildings and Equipment Depreciation Expense

Depreciation expense and operating lease rent expense were as follows:

	Year Ended December 31,
(in millions)	2018		2017		2016
Depreciation expense	$	121	$	125	$	130
Operating lease rent expense	$	208	$	267	$	299

Schedule of Future Minimum Operating Lease Non-cancelable Payments

Future minimum operating lease commitments that have initial or remaining non-cancelable lease terms in excess of one year at December 31, 2018 were as follows (in millions):

2019		2020		2021		2022		2023		Thereafter
$	153	$	113	$	78	$	53	$	33	$	76

Additions to Internal Use and Product Software

Additions to Internal Use and Product Software as well as year-end balances for these assets were as follows:

(in millions)	Year Ended December 31,
Additions to:	2018		2017		2016
Internal use software	$	47	$	36	$	39
Product software	8		10		10

Capitalized Costs, Internal Use and Product Software

(in millions)	December 31,
Capitalized Costs, Net	2018		2017
Internal use software(1)	$	123	$	106
Product software(1)	18		22