ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Accumulated Other Comprehensive (Loss) Income Activity

The following table details the accumulated other comprehensive loss activity for 2020, 2019, and 2018:

($ in millions)	Foreign Currency Translation Adjustments		Derivative Instrument and Other Adjustments		Accumulated Other Comprehensive Loss
Balance at year-end 2017	$	(23)	$	6	$	(17)
Other comprehensive (loss) income before reclassifications (1)	(391)		4		(387)
Reclassification adjustments	11		6		17
Net other comprehensive (loss) income	(380)		10		(370)
Adoption of ASU 2016-01	—		(4)		(4)
Balance at year-end 2018	$	(403)	$	12	$	(391)
Other comprehensive income before reclassifications (1)	35		2		37
Reclassification adjustments	—		(7)		(7)
Net other comprehensive income (loss)	35		(5)		30
Balance at year-end 2019	$	(368)	$	7	$	(361)
Other comprehensive income before reclassifications (1)	229		7		236
Reclassification adjustments	—		(10)		(10)
Net other comprehensive income (loss)	229		(3)		226
Balance at year-end 2020	$	(139)	$	4	$	(135)

(1)Other comprehensive (loss) income before reclassifications for foreign currency translation adjustments includes intra-entity foreign currency transactions that are of a long-term investment nature, which resulted in (losses) gains of $(44) million for 2020, $6 million for 2019, and $14 million for 2018.