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Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Statement of comprehensive income [abstract]
Unrealized gains (losses) on derivatives designated as cash flow hedges, tax	$ (12)	$ 3
Realized (gains) losses on derivatives designated as cash flow hedges, tax	3	(9)
Currency translation adjustments, tax	0	0
Actuarial gain (loss) on post-employment benefit obligations, tax	0	(6)
Net unrealized change on equity investments, tax	$ 0	$ 0

X

- Definition

Income Tax Related to Reclassification Adjustment from AOCI on Cash Flow Hedges, Tax

+ References

No definition available.

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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to cash flow hedges. [Refer: Cash flow hedges [member]; Other comprehensive income]

+ References

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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to exchange differences on the translation of financial statements of foreign operations. [Refer: Other comprehensive income; Reserve of exchange differences on translation]

+ References

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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to investments in equity instruments that the entity has designated at fair value through other comprehensive income. [Refer: Other comprehensive income; Reserve of gains and losses from investments in equity instruments]

+ References

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- Definition

The amount of income tax relating to amounts recognised in other comprehensive income in relation to remeasurements of defined benefit plans. [Refer: Other comprehensive income; Reserve of remeasurements of defined benefit plans; Defined benefit plans [member]]

+ References

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