XML 48 R23.htm IDEA: XBRL DOCUMENT v3.8.0.1
Restructuring
12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Restructuring RESTRUCTURING

The following table shows the balances and activity for restructuring charges:
(in millions)
2017
2016
2015
Liability at beginning of period
$
333

$
467

$
504

Payments
(103
)
(144
)
(127
)
Additional expenses and other
7

10

90

Liability at end of period
$
237

$
333

$
467



Restructuring charges primarily include remaining lease payments for permanently grounded aircraft related to domestic and Pacific fleet restructurings. We are continuing to restructure our domestic fleet by replacing a portion of our 50-seat regional fleet with more efficient and customer preferred aircraft and replacing older, less cost effective B-757-200 aircraft with B-737-900ER aircraft. We are also restructuring our Pacific network by retiring the B-747-400 fleet (the last aircraft retired during 2017) and replacing the fleet with smaller-gauge, widebody aircraft to better match capacity with demand.