Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Changes in Issued and Treasury shares

Changes in our ordinary shares issued were as follows:

(Shares in millions)	Issued
Balance at December 31, 2018 (Predecessor)	1,002
Equity Awards Granted, Vested and Exercised	7
Predecessor Shares Cancellation	(1,009)
Balance at December 13, 2019 (Predecessor)	—
Share Issuance	70
Balance at December 13, 2019 (Successor)	70
Share Issuance	—
Balance at December 31, 2019 (Successor)	70
Share Issuance	—
Balance at December 31, 2020 (Successor)	70

Schedule of Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in our accumulated other comprehensive loss by component:

(Dollars in millions)	Currency Translation Adjustment		Defined Benefit Pension		Deferred Loss on Derivatives		Total
Balance at December 31, 2018 (Predecessor)	$	(1,724)	$	(14)	$	(8)	$	(1,746)
Other Comprehensive Income (Loss) before Reclassifications	52		(12)		—		40
Reclassifications	—		1		8		9
Net Activity	52		(11)		8		49
Balance at December 13, 2019 (Predecessor)	$	(1,672)	$	(25)	$	—	$	(1,697)
Elimination of Predecessor Equity Balances	1,672		25		—		1,697
Balance at December 13, 2019 (Successor)	$	—	$	—	$	—	$	—
Other Comprehensive Income	7		2		—		9
Balance at December 31, 2019 (Successor)	$	7	$	2	$	—	$	9
Other Comprehensive Income	(38)		(14)		—		(52)
Balance at December 31, 2020 (Successor)	$	(31)	$	(12)	$	—	$	(43)