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

6 Months Ended

Jun. 30, 2016

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

Components of comprehensive income (loss), net of tax

Changes in Foreign Currency Translation Adjustments for the three and six months endedJune 30, 2016 and 2015were as follows:

		Foreign
		Currency
		Translation
Three Months Ended June 30, 2016 (Millions), net of tax		Adjustments
Balances as of March 31, 2016	$	(1,103)
Net translation loss of investments in foreign operations		(136)
Net gains related to hedges of investment in foreign operations		51
Net change in accumulated other comprehensive loss		(85)
Balances as of June 30, 2016	$	(1,188)
		Foreign
		Currency
		Translation
Six Months Ended June 30, 2016 (Millions), net of tax		Adjustments
Balances as of December 31, 2015	$	(1,156)
Net translation loss of investments in foreign operations		(33)
Net gains related to hedges of investment in foreign operations		1
Net change in accumulated other comprehensive loss		(32)
Balances as of June 30, 2016	$	(1,188)
		Foreign
		Currency
		Translation
Three Months Ended June 30, 2015 (Millions), net of tax		Adjustments
Balances as of March 31, 2015	$	(912)
Net translation loss of investments in foreign operations		(51)
Net gains related to hedges of investment in foreign operations		22
Net change in accumulated other comprehensive loss		(29)
Balances as of June 30, 2015	$	(941)
		Foreign
		Currency
		Translation
Six Months Ended June 30, 2015 (Millions), net of tax		Adjustments
Balances as of December 31, 2014	$	(787)
Net translation loss of investments in foreign operations		(239)
Net gains related to hedges of investment in foreign operations		85
Net change in accumulated other comprehensive loss		(154)
Balances as of June 30, 2015	$	(941)