Dispositions - Schedule of Discontinued Operations, Net Earnings (Details) - Discontinued operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Discontinued Operations [Line Items]
Revenues	$ 353	$ 321	$ 863	$ 725
Costs and expenses:
Operating	198	182	483	429
Selling, general and administrative	45	38	130	114
Restructuring charges	2	1	2	1
Total costs and expenses	245	221	615	544
Operating income	108	100	248	181
Other items, net	(3)	(6)	(9)	(8)
Earnings from discontinued operations	105	94	239	173
Income tax provision	(27)	(21)	(58)	(47)
Net earnings from discontinued operations, net of tax	78	73	181	126
Previous disposals, cost and expenses	15	7	25	9
Previous disposals, income tax prevision	$ 4	$ 2	$ 6	$ 9