Other Intangible Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2015

Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]

Schedule of Finite-Lived Intangible Assets and Liabilities

Intangible assets and liabilities were as follows (in millions):

	As of March 31, 2015				As of December 31, 2014
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Intangible assets	$	646	$	165	$	2,031	$	1,519
Intangible liabilities	$	1,403	$	655	$	2,056	$	1,274

Schedule of Finite-Lived Intangible Assets and Liabilities Amortization Expense

Amortization of intangible assets and liabilities was as follows (in millions):

	Three Months Ended March 31,
	2015		2014
Amortization of intangible assets	$	31	$	77
Amortization of intangible liabilities	$	34	$	44

Schedule of Finite-Lived Intangible Assets and Liabilities, Future Amortization Expense

Amortization of intangible assets and liabilities for the next five years is expected to approximate the following (in millions):

	Amortization of intangible assets		Amortization of intangible liabilities
Remainder of 2015	$	25	$	81
2016	$	33	$	101
2017	$	33	$	96
2018	$	31	$	90
2019	$	31	$	27