Segments and Geographic Information Segment and Geographic Information (Assets, Depreciation and Amortization and Capital Expenditures ) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Total Assets	$ 38,363	$ 32,963	$ 34,603
Depreciation and Amortization	1,053	1,056	1,068
Capital Expenditures	4,584	2,140	1,960
Interest Income	389	298	268
Interest Expense	1,117	911	1,038
Investments in and Advances to Affiliates	952	1,080	835
Net Equity in Earnings (Losses) of Affiliates	(71)	(24)	(123)
Operating Segments [Member] | US and Utilities SBU
Segment Reporting Information [Line Items]
Total Assets	20,531	16,512	14,464
Depreciation and Amortization	574	549	534
Capital Expenditures	3,352	1,115	1,099
Interest Income	50	28	17
Interest Expense	359	362	371
Investments in and Advances to Affiliates	453	510	568
Net Equity in Earnings (Losses) of Affiliates	54	83	(8)
Operating Segments [Member] | South America
Segment Reporting Information [Line Items]
Total Assets	9,423	7,728	11,329
Depreciation and Amortization	267	273	294
Capital Expenditures	1,071	833	650
Interest Income	177	100	64
Interest Expense	342	239	237
Investments in and Advances to Affiliates	22	19	13
Net Equity in Earnings (Losses) of Affiliates	2	0	(80)
Operating Segments [Member] | MCAC SBU
Segment Reporting Information [Line Items]
Total Assets	4,760	4,545	4,847
Depreciation and Amortization	155	155	164
Capital Expenditures	127	143	183
Interest Income	8	7	14
Interest Expense	150	139	157
Investments in and Advances to Affiliates	180	144	168
Net Equity in Earnings (Losses) of Affiliates	(14)	(23)	(11)
Operating Segments [Member] | EURASIA [Member]
Segment Reporting Information [Line Items]
Total Assets	2,870	3,466	3,621
Depreciation and Amortization	44	66	63
Capital Expenditures	23	20	9
Interest Income	151	161	171
Interest Expense	107	98	113
Investments in and Advances to Affiliates	11	0	1
Net Equity in Earnings (Losses) of Affiliates	0	2	4
Corporate, Non-Segment [Member] | Corporate and Other
Segment Reporting Information [Line Items]
Total Assets	779	712	342
Depreciation and Amortization	13	13	13
Capital Expenditures	11	29	19
Interest Income	3	2	2
Interest Expense	159	73	160
Investments in and Advances to Affiliates	286	407	85
Net Equity in Earnings (Losses) of Affiliates	$ (113)	$ (86)	$ (28)