Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Net Carrying Amount of Goodwill by Operating Segment

The changes in the net carrying amount of goodwill for the six months ended June 30, 2018 are as follows (in millions):

Balance as of December 31, 2017	$	8,358
Goodwill related to current year acquisitions	31
Goodwill related to disposals	(1		)
Goodwill related to prior year acquisitions	10
Foreign currency translation and other	(107		)
Balance as of June 30, 2018	$	8,291

Schedule of Other Intangible Assets by Asset Class

Other intangible assets by asset class are as follows (in millions):

	June 30, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization and Impairment		Net Carrying Amount
Customer related and contract based	$	2,310	$	1,417	$	893	$	2,550	$	1,415	$	1,135
Tradenames	1,031		634		397		1,047		533		514
Technology and other	397		324		73		416		332		84
Total	$	3,738	$	2,375	$	1,363	$	4,013	$	2,280	$	1,733

Schedule of Estimated Future Amortization Expense on Intangible Assets

The estimated future amortization for finite lived intangible assets as of June 30, 2018 is as follows (in millions):

Remainder of 2018	$	205
2019	401
2020	228
2021	131
2022	85
Thereafter	313
Total	$	1,363