XML 59 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
Debt (Tables)
 3 Months Ended
Mar. 31, 2018
Debt Disclosure [Abstract]  
Summary of Outstanding Borrowings
The Partnership’s outstanding borrowings consisted of the following:
(In millions)
March 31, 2018
 
December 31, 2017
MPLX LP:
 
 
 
Bank revolving credit facility due 2022
$
—

 
$
505

5.500% senior notes due February 2023
710

 
710

3.375% senior notes due March 2023
500

 
—

4.500% senior notes due July 2023
989

 
989

4.875% senior notes due December 2024
1,149

 
1,149

4.000% senior notes due February 2025
500

 
500

4.875% senior notes due June 2025
1,189

 
1,189

4.125% senior notes due March 2027
1,250

 
1,250

4.000% senior notes due March 2028
1,250

 
—

4.500% senior notes due April 2038
1,750

 
—

5.200% senior notes due March 2047
1,000

 
1,000

4.700% senior notes due April 2048
1,500

 
—

4.900% senior notes due April 2058
500

 
—

Consolidated subsidiaries:
 
 
 
MarkWest - 4.500% - 5.500% senior notes, due 2023-2025
63

 
63

MPL - capital lease obligations due 2020
7

 
7

Total
12,357

 
7,362

Unamortized debt issuance costs
(79
)
 
(27
)
Unamortized discount
(416
)
 
(389
)
Amounts due within one year
(1
)
 
(1
)
Total long-term debt due after one year
$
11,861

 
$
6,945