v3.10.0.1
Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Deferred Compensation Plans
Year ended December 31 (in millions)
2018

2017

2016

Benefit obligation
$
2,885

$
2,539

$
2,164

Interest expense
$
222

$
209

$
178

Postretirement and Pension Benefits
Year ended December 31 (in millions)
2018

2017

Benefit obligation
$
408

$
425

Amounts in accumulated other comprehensive income not yet recognized in benefits expense
$
(439
)
$
(458
)
NBCUniversal Media LLC [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Deferred Compensation Plans
Year ended December 31 (in millions)
2018

2017

2016

Benefit obligation
$
719

$
621

$
494

Interest expense
$
58

$
64

$
48

Postretirement and Pension Benefits
Year ended December 31 (in millions)
2018

2017

Benefit obligation
$
47

$
51

Amounts in accumulated other comprehensive income not yet recognized in benefits expense
$
(163
)
$
(177
)