EDGAR Filing Documents for 0000018926-18-000012

Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:

SEC Accession No. 0000018926-18-000012

Filing Date

2018-03-01

Accepted

2018-02-28 21:59:48

Documents

106

Period of Report

2017-12-31

Document Format Files

Seq	Description	Document	Type	Size
1	10-K	ctl2017123110k.htm	10-K	3425217
2	EXHIBIT 4.2(B)	ctl20171231ex42b.htm	EX-4.2(B)	1794806
3	EXHIBIT 12	ctl20171231ex12.htm	EX-12	50233
4	EXHIBIT 21	ctl20171231ex21.htm	EX-21	330364
5	EXHIBIT 23	ctl20171231ex23.htm	EX-23	4012
6	EXHIBIT 31.1	ctl20171231ex311.htm	EX-31.1	12130
7	EXHIBIT 31.2	ctl20171231ex312.htm	EX-31.2	12313
8	EXHIBIT 32	ctl20171231ex32.htm	EX-32	6405
15		ctllogo1a01.jpg	GRAPHIC	17400
	Complete submission text file	0000018926-18-000012.txt		22262866

Data Files

Seq	Description	Document	Type	Size
9	XBRL INSTANCE DOCUMENT	ctl-20171231.xml	EX-101.INS	4868731
10	XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT	ctl-20171231.xsd	EX-101.SCH	88905
11	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT	ctl-20171231_cal.xml	EX-101.CAL	163060
12	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT	ctl-20171231_def.xml	EX-101.DEF	685448
13	XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT	ctl-20171231_lab.xml	EX-101.LAB	1560526
14	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT	ctl-20171231_pre.xml	EX-101.PRE	952357

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