Debt (Schedule of Long-term Debt Instruments) (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2026	Dec. 31, 2025
Debt Instrument
Finance leases	$ 370	$ 331
Total debt	14,671	14,229
Less short-term portion	(1,607)	(1,577)
Total long-term debt	13,064	12,652
Accounts receivable securitization facility expiring 2026 \| Line of Credit
Debt Instrument
Long-term debt	1,473	1,459
Borrowing capacity, net of letters of credit	$ 26
Interest rate at September 30, 2026	4.80%
Average month-end principal amount of debt outstanding	$ 1,472
Weighted-average interest rate on average debt outstanding	4.70%
Maximum month-end principal amount of debt outstanding	$ 1,500
Short-term debt extension period	364 days
Collateral amount	$ 1,973
$4.50 billion ABL facility expiring 2030 \| Line of Credit
Debt Instrument
Maximum borrowing capacity	4,500
Long-term debt	2,033	1,645
Term loan facility expiring 2031
Debt Instrument
Long-term debt	$ 969	975
Annual repayment rate	1.00%
3 7/8 percent Senior Secured Notes due 2027 \| Senior notes
Debt Instrument
Stated interest rate	3.875%
Long-term debt	$ 749	748
4 7/8 percent Senior Notes due 2028 \| Senior notes
Debt Instrument
Stated interest rate	4.875%
Long-term debt	$ 1,670	1,669
6 percent Senior Secured Notes due 2029 \| Senior notes
Debt Instrument
Stated interest rate	6.00%
Long-term debt	$ 1,493	1,492
5 1/4 percent Senior Notes due 2030 \| Senior notes
Debt Instrument
Stated interest rate	5.25%
Long-term debt	$ 747	747
4 percent Senior Notes due 2030 \| Senior notes
Debt Instrument
Stated interest rate	4.00%
Long-term debt	$ 747	746
3 7/8 percent Senior Notes due 2031 \| Senior notes
Debt Instrument
Stated interest rate	3.875%
Long-term debt	$ 1,095	1,094
3 3/4 percent Senior Notes due 2032 \| Senior notes
Debt Instrument
Stated interest rate	3.75%
Long-term debt	$ 746	746
5 3/8 percent Senior Notes due 2033 \| Senior notes
Debt Instrument
Stated interest rate	5.375%
Long-term debt	$ 1,487	1,486
6 1/8 percent Senior Notes due 2034 \| Senior notes
Debt Instrument
Stated interest rate	6.125%
Long-term debt	$ 1,092	$ 1,091
ABL facility \| Line of Credit
Debt Instrument
Borrowing capacity, net of letters of credit	2,436
Letters of credit	$ 21
Interest rate at September 30, 2026	4.90%
Average month-end principal amount of debt outstanding	$ 1,546
Weighted-average interest rate on average debt outstanding	4.70%
Maximum month-end principal amount of debt outstanding	$ 2,043
Term loan facility \| Line of Credit
Debt Instrument
Borrowing capacity, net of letters of credit	$ 0
Interest rate at September 30, 2026	5.40%
Average month-end principal amount of debt outstanding	$ 979
Weighted-average interest rate on average debt outstanding	5.20%
Maximum month-end principal amount of debt outstanding	$ 983
4 7/8 percent Senior Notes due 2028, one \| Senior notes
Debt Instrument
Long-term debt	1,666
4 7/8 percent Senior Notes due 2028, two \| Senior notes
Debt Instrument
Long-term debt	$ 4

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