v3.20.1

Debt Senior Unsecured Notes (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt		$ 10,259		$ 11,857
Repayments of unsecured debt		623	$ 44
2023 Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	[1]	0		623
Repayments of unsecured debt		623
2024 Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt		479		479
2025 Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt		1,174		1,174
2028 Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	[1]	1,388		1,387
Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt		$ 3,041		$ 3,663
[1] On January 21, 2020, we redeemed the outstanding $623 million in aggregate principal amount of our 2023 Senior Unsecured Notes, which was included in debt, current portion on our Consolidated Condensed Balance Sheet at December 31, 2019, with the proceeds from the 2028 Senior Unsecured Notes, which was included in cash and cash equivalents on our Consolidated Condensed Balance Sheet at December 31, 2019.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

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