Changes in Accumulated Other Comprehensive Income (Tables)

3 Months Ended

Mar. 31, 2019

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 months endedMarch 31, 2019 and 2018 were as follows:

		Foreign Currency
		Translation
		Adjustments
2019 (Millions), net of tax		Gains (Losses)
Balances as of December 31, 2018	$	(1,060)
Net translation gain of investments in foreign operations		64
Net losses related to hedges of investment in foreign operations		(57)
Net change in accumulated other comprehensive loss		7
Balances as of March 31, 2019	$	(1,053)
		Foreign Currency
		Translation
		Adjustments
2018 (Millions), net of tax		Gains (Losses)
Balances as of December 31, 2017	$	(998)
Net translations gain of investments in foreign operations		53
Net losses related to hedges of investments in foreign operations		(43)
Net change in accumulated other comprehensive loss		10
Balances as of March 31, 2018	$	(988)

Accumulated Other Comprehensive Loss Income - Tax Effect

The following table shows the tax impact for the three months endedMarch 31 for the changes in Foreign Currency Translation Adjustments presented above:

		Tax (benefit) expense
		Three Months Ended
		March 31,
(Millions)		2019		2018
Net translation on investments in foreign operations	$	3	$	(8)
Net hedges of investments in foreign operations		(18)		(14)
Total tax impact	$	(15)	$	(22)