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Other noncurrent liabilities Other noncurrent liabilities
 6 Months Ended
Jun. 30, 2018
Other Noncurrent Liabilities [Abstract]  
Other Liabilities Disclosure [Text Block]
Other Noncurrent Liabilities
Other noncurrent liabilities consisted of the following:
 
June 30,
2018
 
December 31, 2017
 
(in millions)
Accrued straight-line rent
$
12

 
$
13

Reserve for underground storage tank removal
50

 
41

Reserve for environmental remediation
28

 
23

Unfavorable lease liability
17

 
10

Aloha acquisition contingent consideration
11

 
15

Other
18

 
23

Total
$
136

 
$
125