XML 68 R40.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2017
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Deferred Compensation Plans
Year ended December 31 (in millions)
2017

2016

2015

Benefit obligation
$
2,539

$
2,164

$
2,038

Interest expense
$
209

$
178

$
171

Postretirement and Pension Benefits
Year ended December 31 (in millions)
2017

2016

Benefit obligation
$
425

$
538

Amounts in accumulated other comprehensive income not yet recognized in benefits expense
$
(458
)
$
(372
)