Other Comprehensive Earnings (Loss) (Components Of Other Comprehensive Earnings (Loss)) (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Pension and postretirement benefit plans:
Beginning accumulated pension and postretirement benefits		$ (132)	$ (127)
Recognition of net actuarial loss and prior service cost in earnings	[1]	1	1
Settlement of pension benefits	[2]	0	15
Other	[3]	0	7
Accumulated other comprehensive loss, net of tax		$ (131)	$ (104)

[1] Recognition of net actuarial loss and prior service cost are included in the computation of net periodic benefit cost, which is a component of other, net in the accompanying consolidated statements of comprehensive earnings.

[2] The Merger triggered settlement payments to certain plan participants, and the expense associated with this settlement is recognized as a component of restructuring and transaction costs in the accompanying consolidated statements of comprehensive earnings.

[3] Other includes a remeasurement of the pension obligation due to the Merger, which was partially offset by a change in mortality assumption.