Changes in Accumulated Other Comprehensive (Loss) Income (Tables)

6 Months Ended

Jun. 30, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Components of comprehensive income (loss), net of tax

Changes in each component for the three and six months endedJune 30, 2015 and 2014were as follows:

		Foreign		Accumulated
		Currency		Other
		Translation		Comprehensive
Three Months Ended June 30, 2015 (Millions), net of tax		Adjustments		(Loss) Income
Balances as of March 31, 2015	$	(912)	$	(912)
Net translation loss of investments in foreign operations		(51)		(51)
Net gains related to hedges of investment in foreign operations		22		22
Net change in accumulated other comprehensive loss		(29)		(29)
Balances as of June 30, 2015	$	(941)	$	(941)
		Foreign		Accumulated
		Currency		Other
		Translation		Comprehensive
Six Months Ended June 30, 2015 (Millions), net of tax		Adjustments		(Loss) Income
Balances as of December 31, 2014	$	(787)	$	(787)
Net translation loss of investments in foreign operations		(239)		(239)
Net gains related to hedges of investment in foreign operations		85		85
Net change in accumulated other comprehensive loss		(154)		(154)
Balances as of June 30, 2015	$	(941)	$	(941)
		Foreign		Accumulated
		Currency		Other
		Translation		Comprehensive
Three Months Ended June 30, 2014 (Millions), net of tax		Adjustments		(Loss) Income
Balances as of March 31, 2014	$	(503)	$	(503)
Net translation gain of investments in foreign operations		94		94
Net losses related to hedges of investment in foreign operations		(50)		(50)
Net change in accumulated other comprehensive income		44		44
Balances as of June 30, 2014	$	(459)	$	(459)
		Foreign		Accumulated
		Currency		Other
		Translation		Comprehensive
Six Months Ended June 30, 2014 (Millions), net of tax		Adjustments		(Loss) Income
Balances as of December 31, 2013	$	(478)	$	(478)
Net translation gain of investments in foreign operations		145		145
Net losses related to hedges of investment in foreign operations		(126)		(126)
Net change in accumulated other comprehensive income		19		19
Balances as of June 30, 2014	$	(459)	$	(459)