Segment Information Geographic Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	$ 64,875	$ 62,205	$ 60,037
Revenues	184,992	176,191	158,057
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	45,392	42,235	41,925
Revenues	124,968	116,995	105,481
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	6,548	6,147	5,739
Revenues	13,412	13,391	12,590
United Kingdom
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	2,174	1,868	1,264
Revenues	9,936	8,968	8,220
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	4,352	5,222	4,255
Revenues	2,634	2,774	1,813
All Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-Lived Assets	6,409	6,733	6,854
Revenues	$ 34,042	$ 34,063	$ 29,953