Amortizable Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2021

Finite-Lived Intangible Assets, Net [Abstract]

Schedule of Amortizable Intangible Assets, Net

Amortizable intangible assets, net as of December 31, 2021 and 2020, were comprised of the following:

				2021						2020
(Dollars in millions)	Estimated Useful Lives (Years)			Gross Carrying Value		Accumulated Amortization		Net		Gross Carrying Value		Accumulated Amortization		Net
Water rights (1)	10	–	40	$	19	$	10	$	9	$	19	$	9	$	10
Energy contracts	15	–	25		52		23		29		52		21		31
Customer relationships (2)	10				21		4		17		23		3		20
Other					2		—		2		2		—		2
				$	94	$	37	$	57	$	96	$	33	$	63

(1)In order to operate our hydroelectric generation and transmission network, we draw water from various rivers in Quebec. For some of our facilities, the use of such government-owned waters is governed by water power agreements with the province of Quebec, which set out the terms, conditions, and fees (as applicable). In some cases, the agreements are contingent on the continued operation of the related paper mills and a minimum level of capital spending in the region. For our other facilities, the right to generate hydroelectricity stems from our ownership of the riverbed on which these facilities are located.

(2)In connection with our acquisition of the U.S. Sawmill Business, we identified amortizable intangible assets primarily related to customer relationships. See Note 3, “Business Acquisition” for additional information.