Segment Information - Schedule of Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
NET SALES:	$ 2,238	$ 1,644
NET SALES:	2,245	1,649
INCOME (LOSS) FROM OPERATIONS:	193	108
DEPRECIATION AND AMORTIZATION:	139	117
Corporate/Other/Eliminations
Segment Reporting Information [Line Items]
NET SALES:	41	37
INCOME (LOSS) FROM OPERATIONS:	(8)	(6)
DEPRECIATION AND AMORTIZATION:	6	6
Paperboard Mills | Operating Segments
Segment Reporting Information [Line Items]
NET SALES:	296	237
INCOME (LOSS) FROM OPERATIONS:	11	(27)
DEPRECIATION AND AMORTIZATION:	61	58
Americas Paperboard Packaging | Operating Segments
Segment Reporting Information [Line Items]
NET SALES:	1,422	1,169
INCOME (LOSS) FROM OPERATIONS:	153	121
DEPRECIATION AND AMORTIZATION:	43	42
Europe Paperboard Packaging | Operating Segments
Segment Reporting Information [Line Items]
NET SALES:	486	206
INCOME (LOSS) FROM OPERATIONS:	37	20
DEPRECIATION AND AMORTIZATION:	$ 29	$ 11