Debt (Schedule of Debt) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Nov. 30, 2022	Aug. 31, 2021	Aug. 31, 2020	Feb. 29, 2020	Nov. 30, 2019	May 31, 2019	Sep. 30, 2017	Aug. 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Jun. 30, 2008
Debt Instrument [Line Items]
Long-term debt	$ 13,472,000,000
Finance leases	263,000,000		$ 192,000,000
Total debt	13,406,000,000		11,518,000,000
Less short-term portion	(1,178,000,000)		(1,465,000,000)
Total long-term debt	$ 12,228,000,000		$ 10,053,000,000
Weighted-average interest rate on average debt outstanding	5.40%		6.40%
Repurchase facility (terminated in 2024) | Repurchase facility
Debt Instrument [Line Items]
Long-term debt	$ 0		$ 100,000,000
Accounts receivable securitization facility expiring 2025 | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,500,000,000
Long-term debt	1,085,000,000		1,300,000,000
Borrowing capacity, net of letters of credit	$ 415,000,000
Interest rate at December 31, 2024	5.40%
Average month-end debt outstanding	$ 1,219,000,000
Weighted-average interest rate on average debt outstanding	6.10%
Maximum month-end debt outstanding	$ 1,424,000,000
Long term debt extension period	364 days
$4.25 billion ABL facility expiring 2027 | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 4,250,000,000													$ 1,250,000,000
Long-term debt	2,253,000,000		1,261,000,000
Borrowing capacity, net of letters of credit	1,973,000,000
Letters of credit	$ 18,000,000
Interest rate at December 31, 2024	5.60%
Average month-end debt outstanding	$ 1,634,000,000
Weighted-average interest rate on average debt outstanding	6.20%
Maximum month-end debt outstanding	$ 2,259,000,000
Term loan facility expiring 2031
Debt Instrument [Line Items]
Long-term debt	$ 984,000,000		945,000,000
Debt repayment installment rate	1.00%
5 1/2 percent Senior Notes due 2027 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	5.50%
Long-term debt	$ 499,000,000		498,000,000
Debt instrument, face amount	$ 500,000,000
5 1/2 percent Senior Notes due 2027 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount												$ 250,000,000	$ 750,000,000
3 7/8 percent Senior Secured Notes due 2027 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	3.875%
Long-term debt	$ 747,000,000		745,000,000
3 7/8 percent Senior Secured Notes due 2027 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount								$ 750,000,000
4 7/8 percent Senior Notes due 2028 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	4.875%
Long-term debt	$ 1,667,000,000		1,665,000,000
4 7/8 percent Senior Notes due 2028 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount											$ 925,000,000
6 percent Senior Secured Notes due 2029 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	6.00%
Long-term debt	$ 1,490,000,000		1,488,000,000
Debt instrument, face amount				$ 1,500,000,000
6 percent Senior Secured Notes due 2029 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Stated interest rate				6.00%
5 1/4 percent Senior Notes due 2030 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	5.25%
Long-term debt	$ 746,000,000		745,000,000
5 1/4 percent Senior Notes due 2030 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount									$ 750,000,000
4 percent Senior Notes due 2030 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	4.00%
Long-term debt	$ 745,000,000		744,000,000
4 percent Senior Notes due 2030 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Stated interest rate							4.00%
Debt instrument, face amount							$ 750,000,000
3 7/8 percent Senior Notes due 2031 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	3.875%
Long-term debt	$ 1,092,000,000		1,091,000,000
3 7/8 percent Senior Notes due 2031 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount						$ 1,100,000,000
3 3/4 percent Senior Notes due 2032 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	3.75%
Long-term debt	$ 745,000,000		744,000,000
Debt instrument, face amount					$ 750,000,000
6 1/8 percent Senior Notes due 2034 | Senior notes
Debt Instrument [Line Items]
Stated interest rate	6.125%
Long-term debt	$ 1,090,000,000		$ 0
Debt instrument, face amount		$ 1,100,000,000
6 1/8 percent Senior Notes due 2034 | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Debt instrument, face amount		$ 1,100,000,000
Term loan facility | Line of Credit
Debt Instrument [Line Items]
Borrowing capacity, net of letters of credit	$ 0
Interest rate at December 31, 2024	6.10%
Average month-end debt outstanding	$ 993,000,000
Weighted-average interest rate on average debt outstanding	6.80%
Maximum month-end debt outstanding	$ 1,000,000,000
Senior Notes 4.875 Percent, One | Senior notes
Debt Instrument [Line Items]
Long-term debt	1,663,000,000
Senior Notes 4.875 Percent, One | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Long-term debt	1,669,000,000
Debt instrument, face amount										$ 750,000,000
Senior Notes 4.875 Percent, Two | Senior notes
Debt Instrument [Line Items]
Long-term debt	4,000,000
Senior Notes 4.875 Percent, Two | Senior notes | Subsidiaries
Debt Instrument [Line Items]
Long-term debt	$ 4,000,000