Debt (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Schedule of Debt

	September 30, 2020		December 31, 2019
	(millions)
Senior notes:
Issued March 2010, interest at 5.350% payable semi-annually, due March 2020 (a)	$	—	$	600
Issued September 2011, interest at 4.750% payable semi-annually, due September 2021	500		500
Issued March 2012, interest at 4.950% payable semi-annually, due April 2022	350		350
Issued March 2013, interest at 3.875% payable semi-annually, due March 2023	500		500
Issued July 2018 and January 2019, interest at 5.375% payable semi-annually, due July 2025	825		825
Issued June 2020, interest at 5.625% payable semi-annually, due July 2027	500		—
Issued May 2019, interest at 5.125% payable semi-annually, due May 2029	600		600
Issued August 2000, interest at 8.125% payable semi-annually, due August 2030 (a)	300		300
Issued October 2006, interest at 6.450% payable semi-annually, due November 2036	300		300
Issued September 2007, interest at 6.750% payable semi-annually, due September 2037	450		450
Issued March 2014, interest at 5.600% payable semi-annually, due April 2044	400		400
Junior subordinated notes:
Issued May 2013, interest at 5.850% payable semi-annually, due May 2043	550		550
Credit agreement:
Revolving credit facility, weighted-average variable interest rate of 1.510%, as of September 30, 2020, due December 2024	125		200
Accounts receivable securitization facility:
Accounts receivable securitization facility, weighted-average variable interest rate of 1.050% as of September 30, 2020, due August 2022	350		350
Fair value adjustments related to interest rate swap fair value hedges (a)	18		19
Unamortized issuance costs	(40)		(37)
Unamortized discount, net	(7)		(8)
Finance lease liabilities	27		25
Total debt	5,748		5,924
Current finance lease liabilities	4		3
Current debt	500		600
Total long-term debt	$	5,244	$	5,321

(a) The swaps associated with this debt were previously terminated. The remaining long-term fair value related to the swaps is being amortized as a reduction to interest expense through 2030, the original maturity dates of the debt.

Future Maturities of Long-Term Debt

The maturities of our debt as of September 30, 2020 are as follows:

	Debt Maturities
	(millions)
2021	$	500
2022	700
2023	500
2024	125
Thereafter	3,925
Total debt	$	5,750